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A Novel Four-Variable Plate Theory for Free Vibration of FG Plates with Porosities Resting on Winkler/Pasternak/Kerr Foundation 基于Winkler/Pasternak/Kerr地基的多孔FG板自由振动的四变量板理论
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121003
腾 居
{"title":"A Novel Four-Variable Plate Theory for Free Vibration of FG Plates with Porosities Resting on Winkler/Pasternak/Kerr Foundation","authors":"腾 居","doi":"10.12677/ijm.2023.121003","DOIUrl":"https://doi.org/10.12677/ijm.2023.121003","url":null,"abstract":"","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66106535","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
The Numerical Analysis of Brick Structure Vibration by Subway 地铁对砖结构振动的数值分析
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121004
思莹 张
{"title":"The Numerical Analysis of Brick Structure Vibration by Subway","authors":"思莹 张","doi":"10.12677/ijm.2023.121004","DOIUrl":"https://doi.org/10.12677/ijm.2023.121004","url":null,"abstract":"For the structural vibration problem brought by metro operation, the paper takes a building in Xi’an as the research object and establishes a three-dimensional simulation coupling model of track-tun-nel-soil-buildings in the finite element software ANSYS to study the vibration law of buildings under different vehicle speeds, different vehicle types and different floor heights. It can provide some","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66106658","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
Research on Working Performance of Bamboo-Reinforced Concrete Beam 竹筋混凝土梁工作性能研究
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121001
国松 杨
{"title":"Research on Working Performance of Bamboo-Reinforced Concrete Beam","authors":"国松 杨","doi":"10.12677/ijm.2023.121001","DOIUrl":"https://doi.org/10.12677/ijm.2023.121001","url":null,"abstract":"Bamboo-reinforced concrete flexural members with bamboo reinforcement instead of steel bars","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66106932","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
Influence of Square Wave Current on Mixed Bursting and Its Dynamic Analysis 方波电流对混合爆破的影响及其动力学分析
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121006
亚璐 蒋
{"title":"Influence of Square Wave Current on Mixed Bursting and Its Dynamic Analysis","authors":"亚璐 蒋","doi":"10.12677/ijm.2023.121006","DOIUrl":"https://doi.org/10.12677/ijm.2023.121006","url":null,"abstract":"Pre-Bötzinger complex (referred to as pre-BötC) is a key site in the generation of normal respiratory rhythm in newborn mammals. When neurons are subjected to external stimuli, their firing patterns change. Square wave current is one of the simplest and easily achievable forms of current. In this paper, we investigate the effects of square current on the firing pattern of neurons by regulating three variables of square current. By time series, single-parameter bifurcation analysis and two-parameter bifurcation analysis, the dynamic mechanism of generation and transition of bursting pattern is explored. The results show that square current can induce neurons to generate mixed","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66107322","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
Numerical Analysis of the Effect of Cyclic Loading on the Pullout Resistance of Tandem Anchor Plates 循环荷载对串联锚板拉拔抗力影响的数值分析
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121005
希全 邹
{"title":"Numerical Analysis of the Effect of Cyclic Loading on the Pullout Resistance of Tandem Anchor Plates","authors":"希全 邹","doi":"10.12677/ijm.2023.121005","DOIUrl":"https://doi.org/10.12677/ijm.2023.121005","url":null,"abstract":"The anchor plate support structure is a kind of light support structure which is applicable to the fill slope support. On the basis of the anchor plate support structure, the tandem anchor plates","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66106902","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
Correction Calculation and Experimental Study on Stress Intensification Factor of Pipe Elbow 管弯头应力增强系数的修正计算及试验研究
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.121007
壮 孙
{"title":"Correction Calculation and Experimental Study on Stress Intensification Factor of Pipe Elbow","authors":"壮 孙","doi":"10.12677/ijm.2023.121007","DOIUrl":"https://doi.org/10.12677/ijm.2023.121007","url":null,"abstract":"In order to study the stress intensification effect of pipe elbow in the secondary stress check, the U-shaped pipeline commonly used in engineering was taken as the research object. The experiment platform for analyzing pipe elbow stress was established, and the maximum stress with the exter-nal load was measured and compared with the results of the Finite Element Analysis (FEA) results and ASME B31.3 Code. On this basis, a correction formula calculating the Stress Intensification Factor (SIF) of elbows was proposed, and the influence of the ratio of pipe diameter to wall thickness and the relative diameter on the elbow stress distribution was studied. The results showed that the maximum stress of the elbow appeared near the center point of the intrados of the elbow, and the stress of the elbow increased approximately linearly with the increase of the external load in the elastic stage. The simulation results of the shell element finite element model are basically consistent with the experimental values. The stress distribution law of each elbow in the U-shaped pipe-line was significantly affected by the external bending moment, and the greater the external bending moment, the higher the elbow stress values. Based on the experimental and finite element calculation results and considering the influence of bending moment on the stress intensification effect of elbow, the calculation results of the SIF correction formula is closer to the experimental values compared with the ASME B31.3 code, and the computational accuracy was improved by 16.77%. Under the same external load, the elbow stress decreased with the increase of the ratio of pipe diameter to wall thickness and increased with the increase of the relative diameter. The ratio of pipe diameter to wall thickness had a significant effect on the elbow stress distribution, and the change of the relative diameter had little effect on the elbow stress calculation.","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66107060","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
Discussions of an Example in Mechanics of Materials 材料力学中一个例子的讨论
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.122009
劲夫 张
{"title":"Discussions of an Example in Mechanics of Materials","authors":"劲夫 张","doi":"10.12677/ijm.2023.122009","DOIUrl":"https://doi.org/10.12677/ijm.2023.122009","url":null,"abstract":",","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66107316","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
Comparative Study on the Performance of Bridge Pier Protective Devices Made of Different Materials 不同材料桥墩防护装置性能的比较研究
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.122010
彦龙 赵
{"title":"Comparative Study on the Performance of Bridge Pier Protective Devices Made of Different Materials","authors":"彦龙 赵","doi":"10.12677/ijm.2023.122010","DOIUrl":"https://doi.org/10.12677/ijm.2023.122010","url":null,"abstract":"","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66107453","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
Study on Aeroelastic Dynamic Characteristics of Fiber-Reinforced FGM Beams in Supersonic Flow 超声速流动中纤维增强FGM梁气动弹性动力特性研究
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.122008
明君 韩
{"title":"Study on Aeroelastic Dynamic Characteristics of Fiber-Reinforced FGM Beams in Supersonic Flow","authors":"明君 韩","doi":"10.12677/ijm.2023.122008","DOIUrl":"https://doi.org/10.12677/ijm.2023.122008","url":null,"abstract":"Based on the classical beam theory (CBT), the influence of the nonlinear effects of piston aerodynamic theory on the flutter characteristics of fiber-reinforced functionally graded materials (FGM) at hypersonic speeds is studied in this paper. First, the material properties of fiber-reinforced FGM","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66107137","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 of Transient Heat Conduction of Infinite Flat Plate Subjected to Heat Flow Boundary 受热流边界影响的无限大平板瞬态热传导分析
力学研究 Pub Date : 2023-01-01 DOI: 10.12677/ijm.2023.123011
俊谚 卢
{"title":"Analysis of Transient Heat Conduction of Infinite Flat Plate Subjected to Heat Flow Boundary","authors":"俊谚 卢","doi":"10.12677/ijm.2023.123011","DOIUrl":"https://doi.org/10.12677/ijm.2023.123011","url":null,"abstract":"","PeriodicalId":67940,"journal":{"name":"力学研究","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135754632","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
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