Volume 2: Computer Technology and Bolted Joints; Design and Analysis最新文献_第8页

Algorithm Improvement of Transfer Matrix Method for Vibration Propagation of Periodic Pipeline Structure 周期管道结构振动传播传递矩阵法的算法改进

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-85297

Qingna Zeng, Donghui Wang, F. Zang, Yixion Zhang

{"title":"Algorithm Improvement of Transfer Matrix Method for Vibration Propagation of Periodic Pipeline Structure","authors":"Qingna Zeng, Donghui Wang, F. Zang, Yixion Zhang","doi":"10.1115/pvp2022-85297","DOIUrl":"https://doi.org/10.1115/pvp2022-85297","url":null,"abstract":"\u0000 This paper proposes an improved transfer matrix method (TMM) algorithm to calculate frequency response function (FRF) for finite periods of periodic composite pipelines structures. Traditional TMM usually generate instable matrix and inaccurate calculation results for Phononic crystals (PCs) pipeline. Under the assumption that periodic distribution of pipeline structure with no intermediate excitation, the main idea of the improved algorithm is to reasonably divide finite periodic pipeline into several effective segments, then the transfer relationship of state vector for each connected pipe part could be expressed individually, thereby realizing the calculation order reduction by expanding the dimension of overall stiffness matrix. This improved algorithm could effectively avoid cumulative error caused by diagonal sparse matrix operations, thus getting true dynamic response to calculate exact FRF curves. Moreover, this algorithm could fundamentally improve the accuracy and stability of traditional TMM calculations. The transverse FRF for finite periods calculated by improved TMM shows excellent consistency with corresponding band gap structures (BGs), validate the correctness of derived theory and algorithm. This improved TMM algorithm supplies an effective method for FRF calculation of finite pipeline periods, and also provide effective verification of BGs for infinite structures, which could guide the vibration and noise reduction design of pipeline system.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81902595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plan of a Shaking Table Test on a Piping System Model for Verifying the Fracture-Control Concept 为验证裂缝控制概念，对管道系统模型进行振动台试验的方案

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84266

Izumi Nakamura, N. Kasahara

{"title":"Plan of a Shaking Table Test on a Piping System Model for Verifying the Fracture-Control Concept","authors":"Izumi Nakamura, N. Kasahara","doi":"10.1115/pvp2022-84266","DOIUrl":"https://doi.org/10.1115/pvp2022-84266","url":null,"abstract":"\u0000 To mitigate the severe effects in the beyond design basis accident (BDBA), the concept of fracture control was proposed in the previous study. The idea of the fracture control is to manage the accident consequence by controlling to cause minor failure prior to the fatal failure.\u0000 Taking the piping system as an example, boundary failure should be prevented under the BDBA condition, whereas the minor failure, such as support failure which does not affect the function of the piping system, can be acceptable.\u0000 To realize the fracture control concept on piping system, shaking table tests on piping systems with support are planned. As the first step of the attempt, fundamental experiment on relatively simple piping system and support configuration was conducted. In this experiment, pipe elbows made of simulation material (lead-antimony alloy) were used, and the support was modeled by a plate. Through the experiments, the fracture of support successfully occurred prior to the large deformation of pipe itself. The results showed that the fracture control may be possible when the fracture of support occurred prior to the failure of pipe itself, and the ratio of the input frequency to the specimen’s natural frequency (fR) be over 1.0 after the support failure. The test results demonstrated the possibility of fracture control concept by support failure.\u0000 As the next step of the attempt, shaking table test on more realistic piping system, which is named as validation test, is now prepared. The preliminary analysis shows that the inelastic behavior of support is expected.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84326800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis to Relate Data From Radial Compression Tests on Helical Springs to Tensile Material Properties 螺旋弹簧径向压缩试验数据与拉伸材料性能的关系分析

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84892

André Gagnon, D. Metzger

{"title":"Analysis to Relate Data From Radial Compression Tests on Helical Springs to Tensile Material Properties","authors":"André Gagnon, D. Metzger","doi":"10.1115/pvp2022-84892","DOIUrl":"https://doi.org/10.1115/pvp2022-84892","url":null,"abstract":"\u0000 In CANDU nuclear reactors, pressure tubes reside within a calandria tube with separation maintained by helical springs installed in the annular space. Evaluation of material degradation due to the unique operating environment requires testing of ex-service spring material by compressing short spring segments by two diametrically opposed forces. The load vs. displacement results combined with the geometry allows for the stress-strain behavior to be derived. The test specimens are effectively unmodified from the as-received condition so accurate characterization of the geometry is required. Since the test response is mainly bending, error in the radial section dimension is augmented by powers of 2 and 3 when calculating bending stress and specimen stiffness respectively. Additional complications come from nonuniform loading of the coils due to end effects.\u0000 Detailed analysis that accounts for end effects is applied to the linear elastic portion of the load curve to accurately quantify the specimen dimensions. With geometry determined, the nonlinear portion of the tensile curve is adjusted to reproduce the entire load curve up to the failure point. Examples are presented to demonstrate how the load corresponding to the yield point and outer fiber stress at the failure point can be determined.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"205 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88576209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Critical Understanding of “Low-Stress” Spiral Wound Gaskets 对“低应力”螺旋缠绕垫片的批判性理解

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84739

Alton Jamison

{"title":"A Critical Understanding of “Low-Stress” Spiral Wound Gaskets","authors":"Alton Jamison","doi":"10.1115/pvp2022-84739","DOIUrl":"https://doi.org/10.1115/pvp2022-84739","url":null,"abstract":"\u0000 Low-stress spiral wound gaskets are marketed as an alternative to standard spiral wound gaskets, requiring less torque to seat the gasket. Spiral wound gaskets are common commodities used in piping reliability staff are constantly looking for different alternatives. Multiple manufacturers offer a low-stress version of spiral wound gaskets. Do these spiral wound gaskets offer a low-stress solution, and do they perform better than a standard spiral wound gasket? This paper will go beyond the marketing of “low-stress” spiral wound gaskets and examine the construction and engineering behind these gasket designs. Manufacturers of spiral wound gaskets have made subtle changes and the “low-stress” technology has become a common theme throughout the spiral wound gasket market. Multiple chemical and petrochemical plants use these designs in their piping systems and sometimes as replacements for ASME recommended spiral wound gaskets with inner rings. Low-stress spiral wound gaskets have multiple designs from additional graphite in the filler to an anti-buckling design which are marketed as requiring less initial preload to seat. This paper will examine the validity of these gaskets and determine if they are low-stress and if they provide a credible seal in a bolted flanged joint. [1]","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83437273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison Between Different Calculation Methods for Determining Bolting-Up Torque Moments 不同紧固力矩计算方法的比较

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-86163

Alexander Mutz, M. Schaaf, S. Hufnagel

{"title":"Comparison Between Different Calculation Methods for Determining Bolting-Up Torque Moments","authors":"Alexander Mutz, M. Schaaf, S. Hufnagel","doi":"10.1115/pvp2022-86163","DOIUrl":"https://doi.org/10.1115/pvp2022-86163","url":null,"abstract":"\u0000 The ASME BPVC, Section III, Appendix XI [1] regulates the flange calculation for class 2 and 3 components in Suisse nuclear power plants, and it is also used for class 1 flanges.\u0000 The most common European Standard for the design of bolted flanged joints is EN 1591-1 [2], the required gasket characteristics for this calculation procedure are defined in EN 13555 [3]. These characteristics can be determined experimentally and they are not only used in EN 1591-1 but also in more realistic finite-element calculations.\u0000 Finite element calculations are carried out for a certain number of combinations of flange and gasket materials as well as bolt types in order to prove compliance with the integrity and tightness of the connections in the assembly and subsequent operational states, taking into account the tightening torques. A total of almost 400 different combinations of flange, bolt and gasket geometries and materials were examined. The focus is laid on flange types fabricated according to European standards which are generally thinner — looking at the wall thickness or flange ring in the same pressure range — than in the ASME world.\u0000 In this paper the bolting-up torque moments determined with the European standard EN 1591-1 for the flange connections, are assessed with twice elastic slope method, limit load and elastic-plastic stress analysis according to ASME BPVC, Section VIII, Div. 2. [4] Proof of acceptability of the nonlinear finite element-calculations are conducted according to ASME standard procedures like ASME SECTION III, Appendices EE and FF for the level D.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"134 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83419503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stud Bolt Thread Engagement: A Fitness for Service Approach 螺柱螺栓螺纹啮合:适用于服务的方法

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84722

Colton M. Cranford

{"title":"Stud Bolt Thread Engagement: A Fitness for Service Approach","authors":"Colton M. Cranford","doi":"10.1115/pvp2022-84722","DOIUrl":"https://doi.org/10.1115/pvp2022-84722","url":null,"abstract":"\u0000 In the pressure equipment industry, codes of construction stipulate that fastener assemblies shall exhibit thread engagement through the full depth of the nut. In many older facilities and in locations with poor quality control, assemblies may be found on in-service equipment which do not have full thread engagement and do not meet the requirements of the code of construction. This is often found during the routine visual inspection of equipment and is flagged as a construction code deficiency requiring attention. Current post construction code guidance on fastener assemblies is ambiguous on how to handle fasteners with less-than-full thread engagement exceeding one thread of shortfall. The perceived risk of such a lack of thread engagement may lead maintenance organizations to perform costly and high-risk remediation activities, such as in-service “clamping” or “single stud replacement,” also known as “hot-bolting.” However, in many situations, fastener assembly strength can be proven to be sufficient for a given joint through analytical evaluation. Using a combination of innovative and existing thread strength and flanged joint considerations, the minimum required length of engagement, and, thus, the maximum allowable lack of engagement, can be safely determined for most fasteners on flange connections. This paper reviews some of the most important fastener strength considerations to propose a post-construction evaluation technique to determine the fitness for service of less-than-fully engaged fastener assemblies.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89618856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How Data Point Numbers in Material Curve Affect Ansys Mechanical Simulation 材料曲线中的数据点数如何影响Ansys力学模拟

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84254

Qi Li, Rafal Sulwinksi

{"title":"How Data Point Numbers in Material Curve Affect Ansys Mechanical Simulation","authors":"Qi Li, Rafal Sulwinksi","doi":"10.1115/pvp2022-84254","DOIUrl":"https://doi.org/10.1115/pvp2022-84254","url":null,"abstract":"\u0000 Finite element analysis (FEA) plays a vital role in new product design. When designing components with a complex geometry and/or complex loading, the nonlinear elastic-plastic analysis method is recommended in the ASME Boiler and Pressure Vessel Code (BPVC). However, the true stress and true strain material curve must be calculated first before elastic-plastic analysis can be performed.\u0000 ASME BPVC has provided the method to calculate the material curve, but first, the user has to decide how many data points to use in Ansys. Next, the user needs to pick a plasticity model to generate the curve for simulation.\u0000 This paper describes how Ansys uses the data points in the material curve to calculate the stress and strain, specifically the sublayer or overlay model, in which the material is assumed to be composed of a number of sublayers or subvolumes. In addition, it includes case studies that evaluate the impact of data point numbers in the material curve on the Ansys simulation accuracy and solve time. It was discovered that the simulation accuracy was slightly affected by the data point numbers in the material curve; however, the data point numbers can have a significant effect on the solve time of each iteration: the more data point numbers, the more solve time for each iteration.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73915575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mesh Morphing Based on Standard FEA Software Features and Application to Crack Propagation 基于标准有限元软件特征的网格变形及其在裂纹扩展中的应用

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-78445

E. Feulvarch, A. Wasylyk, Abdelhak Benrabia, Divjot Jolly, P. Duranton

{"title":"Mesh Morphing Based on Standard FEA Software Features and Application to Crack Propagation","authors":"E. Feulvarch, A. Wasylyk, Abdelhak Benrabia, Divjot Jolly, P. Duranton","doi":"10.1115/pvp2022-78445","DOIUrl":"https://doi.org/10.1115/pvp2022-78445","url":null,"abstract":"\u0000 In the field of numerical simulation, mesh-morphing is a technique that can be used to modify an existing Finite Element Mesh by the means of applying a specific distortion. Most of mesh-morphing methods simply change the positions of the nodes, hence the initial mesh connectivity, as well as the material properties are retained, and the boundary conditions, loadings, contact settings, etc. can be applied without any change in the input file. In this way, a simulation model can be quickly adapted with regards to any changes in the geometry or a new geometry can be created without using a CAD model.\u0000 This article introduces the concept of mesh morphing using only standard Finite Element Analysis software features. The presented morphing method is used to modify a complicated mesh given a sample of displacements at known locations. Like standard morphing techniques based on the Radial Basis Functions, a weight function is calculated for each node by using steady state thermal calculation. Then, displacements at known locations are imposed to some nodes and a standard mechanical equation system is solved to calculate the displacements of all the nodes of the structure.\u0000 The presented method was applied to solve some industrial applications for Class 1 Nuclear components which are showed here in order to illustrate the method.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74984484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Investigation on the Fatigue Strength for Different Tightening Procedures and Materials in Metric Screws 公制螺钉不同拧紧方法和材料疲劳强度的试验研究

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-84644

S. Fini, D. Croccolo, M. De Agostinis, G. Olmi, F. Robusto, C. Scapecchi

{"title":"Experimental Investigation on the Fatigue Strength for Different Tightening Procedures and Materials in Metric Screws","authors":"S. Fini, D. Croccolo, M. De Agostinis, G. Olmi, F. Robusto, C. Scapecchi","doi":"10.1115/pvp2022-84644","DOIUrl":"https://doi.org/10.1115/pvp2022-84644","url":null,"abstract":"\u0000 The aim of this present paper is to investigate the influence of some joint design parameters on the fatigue strength of metric screws. This investigation involved different screws strength grades (8.8 and 12.9). The experimental tests were carried out on black oxidized M6 screws, coupled with steel nuts of the corresponding strength class. Both screws and nuts were tested in “as received” lubrication condition. The screws were tested untightened and tightened with the tightening torque causing yielding (100% of the yield stress). A preliminary test to evaluate the tightening torque providing the desired equivalent stress on the screw was carried out. A tightening machine bench which was able to measure the tightening load and the friction coefficients both in the underhead and in the thread was used. The tests were run controlling the tightening torque and the spindle speed. In the following tests, the screws were tightened at the desired tightening torque and then untightened by means of the aforementioned tightening machine bench. Then the screws and the nuts were assembled on an ad hoc test fixture and tested on a resonant testing machine in order to evaluate the screw fatigue limit according to the international standard ISO 3800. The experimental results were processed by means of statistical tools of two-way ANOVA and Fisher Test in order to evaluate the effect of each parameter on the fatigue response of the screws.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73045582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ASME Sec. III NB-3200-Based Environmental Fatigue Analysis of Safety Injection Piping for Determining Postulated Rupture Locations 基于nb -3200的安全注射管道环境疲劳分析，用于确定假定的破裂位置

Volume 2: Computer Technology and Bolted Joints; Design and Analysis Pub Date : 2022-07-17 DOI: 10.1115/pvp2022-81565

B. Lee, I. Nam, Wooseok Yang, C. Lee, Dongjae Lee

{"title":"ASME Sec. III NB-3200-Based Environmental Fatigue Analysis of Safety Injection Piping for Determining Postulated Rupture Locations","authors":"B. Lee, I. Nam, Wooseok Yang, C. Lee, Dongjae Lee","doi":"10.1115/pvp2022-81565","DOIUrl":"https://doi.org/10.1115/pvp2022-81565","url":null,"abstract":"\u0000 Branch Technical Position (BTP) 3-4 provides a guideline to determine postulated rupture locations for ASME Class 1 piping. This guideline contains criteria related to the maximum cyclic stress ranges and cumulative usage factor (CUF) by using only NB-3600-based procedure which may have conservative analysis results for determining postulated rupture locations.\u0000 Recently issued BTP 3-4 Rev.3 provides two different CUF limits of 0.1 for air environments and 0.4 for Light Water Reactor (LWR) environments, respectively, for determining postulated rupture locations. To calculate CUFen considering the effects of the LWR environments, the fatigue usage factor determined in the air environments based on NB-3200 or NB-3600 of ASME B&PV Sec. III is multiplied by the environmental fatigue correction factor (Fen) based on Regulatory Guide 1.207 (RG 1.207). The Fen values may vary depending on the LWR environment conditions and the maximum Fen can be determined as a factor of approximately 14 for stainless steels. Also, RG 1.207 requires to use the new design fatigue curves (DFC), which have been developed recently by Argonne National Laboratory, to perform the environmental fatigue analysis. Since the new DFC predicts much shorter fatigue lives than the current DFC given in ASME B&PV Sec. III for stainless steels, the CUFen in the LWR environments could be significantly increased.\u0000 For these reasons, many points in piping systems could be determined to be postulated rupture locations due to exceeding the CUFen limit of 0.4 in the LWR environments.\u0000 In this paper, NB-3200- and NB-3600-based stress analyses and fatigue analyses considering both the air environments and the LWR environments for the safety injection (SI) piping have been performed to evaluate the conservatism of NB-3600-based stress analysis results and to review the effects of the LWR environments for determining postulated rupture locations.","PeriodicalId":23700,"journal":{"name":"Volume 2: Computer Technology and Bolted Joints; Design and Analysis","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79260703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0