{"title":"Wall Temperature Effects on Aerothermodynamics of the Hypersonic Blunt Cone","authors":"K. Zhong, Peng Bi, Yumin Mou, Xinguo Wu, Wei Zhao","doi":"10.1109/ICMAE52228.2021.9522560","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522560","url":null,"abstract":"Accurate aeroheating predictions play a significant role in the design of thermal protection system. In this paper, the non-equilibrium method is implemented to investigate wall temperature effects on aeroheating characteristics of hypersonic blunt cone. Seven isothermal wall temperatures (300K~2100K) under three different incoming states are utilized to take account of the temperature effects respectively. The numerical results show that when ρ∞=1.0×10-5kg/m3 or1.0×10-3kg/m3, the stagnation heat flux increases first and then decreases gradually as the wall temperature increases. For instance, when ρ∞=1.0×10-5kg/m3, the stagnant heat flux of Tw=600K case increases by up to 4% (0.04MW/m2) compared to Tw=300K case. In actual engineering applications, wall temperature should be set reasonably according to the actual condition of vehicle surface to obtain accurate aeroheating predictions. The mechanism of monotonous variation of heat flux versus wall temperature is complicated for different flow conditions, and thus in-depth exploration is expected to be carried out in the future.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116563631","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}
{"title":"Numerical Simulation and Experimental Investigation on Regression Rate of GOX /HTPB Hybrid Rocket Motor","authors":"Zhongshu Wang, H. Tian","doi":"10.1109/ICMAE52228.2021.9522500","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522500","url":null,"abstract":"In this paper, a two-dimensional numerical simulation model of the regression rate for GOX /HTPB hybrid rocket motor is established. The influence of the soot particle radiation heat flow on the regression rate is considered, and the numerical simulation results are compared with experimental results. Numerical simulation studies have shown that regression rate is 0.83mm/s when the influence of the soot particle radiation heat flow is not considered. The regression rate is 0.94mm/s when considering the influence of radiation heat flow of soot particles, which is closer to the test regression rate 1.06mm/s.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122566491","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}
{"title":"Review Work on Automatic Monitoring Systems in Machining Process: Means and Methods","authors":"K. Mehdi","doi":"10.1109/ICMAE52228.2021.9522429","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522429","url":null,"abstract":"In order to promote better part quality and optimum productivity, automatic machining monitoring systems are essential for the proper functioning and safety of the manufacturing process. This monitoring process is based on the processing of a signal acquired in real time during manufacture. The signal is based on scientific criteria that guarantee maximum efficiency of the information recorded. In this context, we propose to present a review of the various results resulting from the experimental work on these monitoring systems. Our interest will focus on the study of industrial system diagnostics and on scientific and industrial objectives dealing with the monitoring system in order to early detect any deviation in machine or tool behavior. We will present a description of the means and methods employed in the automatic monitoring of production by machining of metals. More specifically, we will discuss the different diagnostic approaches at the base of the models developed by the scientific community.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122839997","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}
{"title":"Study of the Effect of Alumina (Al2O3) Filler on the Viscoelastic Behavior and Mechanical Properties of LDPE","authors":"Ahmed Saeed Hashim, N. Saad","doi":"10.1109/ICMAE52228.2021.9522582","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522582","url":null,"abstract":"Viscoelastic behavior is a very important behavior in the process of Characterization to polymers therefore This paper investigates the viscoelastic behavior of LDPE reinforced by (10,20,30 and 40%) weight fraction of AL2O3 powder, the two mixing process were used the first is dry mixing mechanical the (ball mill) and second is fusion process to mixes the materials by the twin extruder, to mixes, the LDPE with the AL2O3.to obtain the new modified composite material (LDPE/ AL2O3), the sample was prepared by using a standard pressing die, The different testing equipment was used to conduct these test, creep test (WP 600), and Tensile test(WDW-5E ), and impact test(DIN EN 10045/DIN), with a constant temperature of 20 °C. SEM was used To know surface morphology for The test samples, The creep test was also performed for the sample that presented the best creep resistance at temperatures of 30, 40, and 50 °C. It was concluded that higher values of creep resistance and tensile strength occur at lower reinforcement ratios of alumina. The strengthened composite 10% alumina Made the best performance in creep resistance and the highest tensile strength and which amounted to (10MPa) while the creep performance decreased with the increase in temperature, and 50 °C was the highest temperature the sample could withstand before collapsing. Young's modulus values increased with increasing alumina enhancement, as 30% alumina recorded the highest Young's modulus value, which amounted to (200 MPa). The impact resistance values increased with the introduction of 20% alumina to value (16.835KJ / M2) and continued to rise until it reached its peak in value (23.825KJ / M2) at 30% alumina.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114583551","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}
{"title":"Accommodating and Assisting Human Partners in Human-Robot Collaborative Tasks through Emotion Understanding","authors":"Hope Diamantopoulos, Weitian Wang","doi":"10.1109/ICMAE52228.2021.9522451","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522451","url":null,"abstract":"Human-robot collaboration is inevitable in future smart manufacturing. In order to ensure safe human-robot collaboration, we develop a transfer learning-based approach to teach the robot to understand human emotions in smart manufacturing contexts. Our approach enables the robot to accurately understand human emotions and accommodate its human partner with corresponding assisting actions in collaborative tasks. This allows for improved collaboration-safety and enhanced ergonomics in human-robot partnerships. Experimental results and evaluations demonstrate that the robot can precisely understand human emotions in real time and effectively assist its human partner in real-world co-assembly tasks. Future work for this study is also discussed.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128518839","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}
{"title":"Flight Profile Modeling and Study of Algorithms for Control of Fuel System Units of an Advanced Light Helicopter","authors":"Talalaeva P. I., S. S., M. V, Z. I., S. I.","doi":"10.1109/ICMAE52228.2021.9522475","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522475","url":null,"abstract":"The paper presents a method of building a simulation model of a light helicopter flight, in order to study the dynamics of changes in the input parameters that have a significant effect on the fuel system. The simulation model allows to simulate the flight of a helicopter in the entire operational range of heights and speeds, and can also be adapted to vehicles of other categories with different dynamics. Mathematical models of the system units are created based on the characteristics of real prototypes: pumps, engines, valves, flexible hoses, etc. The article also considers general algorithms for controlling the fuel system units, which provide the fuel supply to the engines with the specified characteristics.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123489066","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}
J. Gong, Kai-li Ma, Jie Zhang, Zhengze Zhang, C. Bian, Guowei Zhu, N. Yan
{"title":"Experiment Study of Failure Mode of HTPB/AP Interfacial Debonding","authors":"J. Gong, Kai-li Ma, Jie Zhang, Zhengze Zhang, C. Bian, Guowei Zhu, N. Yan","doi":"10.1109/ICMAE52228.2021.9522528","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522528","url":null,"abstract":"Macro- and micro-mechanics viscoelastic model for composite solid propellant was proposed. The adhesive energy has an important influence on the behavior of composite solid propellant. It was shown that as the adhesive energy increases, the strength of propellant increases. Meanwhile, the mechanical response of HTPB/AP interface is modeled by the bilinear cohesive zone model describing the debonding process. According to the cohesive zone model, one-side AP tester and sandwich apparatus were designed to determine the value of adhesive energy between the binder and AP, respectively. Based on the sandwich apparatus, the energy per unit area of completely interfacial debonding without MAPO is equal to 14 J/m2, and lower limit of adhesive energy per unit area of completely interfacial debonding with MAPO is determined. According to the test result of one-side AP and the numerical simulation of macro- and micro-mechanics viscoelastic algorithm, it can conclude that the failure mode of HTPB/AP in composite solid propellant is the similarly interfacial debonding, instead of fully interfacial debonding.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131606993","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}
{"title":"A Novel Burn Rate Prediction Model of Rotating Solid Rocket Motors","authors":"Ran Wei, Bao Futing, Lin Sun, Meng Li","doi":"10.1109/ICMAE52228.2021.9522468","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522468","url":null,"abstract":"In solid rocket motors which rotate during operation, the combustion behavior is significantly different from ordinary motors because of centripetal acceleration. Most of the existing combustion rate prediction models are complex and require the support of material parameters and empirical parameters. To simplify the calculation while maintaining simulation accuracy, a novel burn rate prediction model, which tries to minimizes the physical simulation requirements and mainly relies on free parameters to fit actual burn rate distribution, is proposed in this article. The proposed model is proven to fit with the experiment data accurately, and doesn’t require fluid or thermo-chemical simulations.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"80 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130742175","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}
{"title":"Research on Setting Method of Neutral Plane Offset of Shell Element in PRSEUS Panel Structure Modeling","authors":"Yongjie Zhang, Yingying Wu","doi":"10.1109/ICMAE52228.2021.9522501","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522501","url":null,"abstract":"The PRSEUS panel structure meets the design requirements of high lift drag ratio and low fuel consumption of wing body fusion aircraft. In the finite element analysis software ABAQUS, the modeling method of setting different offsets on skin, flange and tear strap is adopted to compare the influence of different shell element offsets on the first-order buckling eigenvalues, and the accurate shell element neutral plane offsets are obtained by comparing the test results, It provides a reference for accurate modeling of similar panel structures.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133810528","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}
Wen Chaoran, Wu Hongcheng, Wu Xinyun, Maoyujun, Yin Hang
{"title":"Air Combat Simulation System for Airborne Weapon Equipment Verification","authors":"Wen Chaoran, Wu Hongcheng, Wu Xinyun, Maoyujun, Yin Hang","doi":"10.1109/ICMAE52228.2021.9522497","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522497","url":null,"abstract":"In order to adapt to the new requirements of the new situation, the goal of verification and identification of airborne weapons equipment in the context of combat is proposed, and an air combat simulation system is proposed. Through the simulation of the airborne weapon, the evaluation of the performance and effectiveness of the weapon performance and effectiveness is supported.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115476919","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}