Simulation-Based Design and Optimization of Accelerometers Subject to High-Temperature and High-Impact Loads

Sensors

Bailin Li¹  Jinhui Zheng²  Ji Li²  Zhuming Bi³  Junjie Dan⁴  Yaling Tian⁵ 

[1] College of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China;College of Mechanical and Electrical Engineering, Chengdu Aeronautic Polytechnic, Chengdu 610100, China;Department of Civil and Mechanical Engineering, Purdue University Fort Wayne, Fort Wayne, IN 46805, USA;Manufacturing Department, Aviation Industry Corporation of China, Ltd., Chengdu Aircraft, Chengdu 610092, China;School of Intelligent Manufacturing, Chengdu Technological University, Chengdu 610071, China;

关键词: accelerometer;    high-temperature high-impact (thermal impact);    bolt preload;    multi-factor coupling;    static analysis;    dynamic analysis;    virtual experiment;   

DOI  :  10.3390/s19173759

来源: DOAJ

【 摘 要 】

Due to multi-factor coupling behavior, the performance evaluation of an accelerometer subject to high-temperature and high-impact loads poses a significant challenge during its design phase. In this paper, the simulation-based method is applied to optimize the design of the accelerometer. The proposed method can reduce the uncertainties and improve the fidelity of the simulation in the sense that (i) the preloading conditions of fasteners are taken into consideration and modeled in static analysis; (ii) all types of loadings, including bolt preloads, thermal loads, and impact loads, are defined in virtual dynamic prototype of the accelerometer. It is our finding that from static and dynamic analysis, an accelerometer is exposed to the risk of malfunction and even a complete failure if the temperature rises to a certain limit; it has been proved that the thermal properties of sensing components are the most critical factors for an accelerometer to achieve its desired performance. Accordingly, we use a simulation-based method to optimize the thermal expansion coefficient of the sensing element and get the expected design objectives.

【 授权许可】

Unknown