基于预应力和局部加强结构的特定性能双稳态结构设计

doi:10.3901/JME.2019.03.162

机械工程学报 ›› 2019, Vol. 55 ›› Issue (3): 162-168.doi: 10.3901/JME.2019.03.162

基于预应力和局部加强结构的特定性能双稳态结构设计

高仁璟^1,2, 李明丽², 赵剑², 刘书田¹

1. 大连理工大学工业装备结构分析国家重点实验室大连 116024;
2. 大连理工大学汽车工程学院大连 116024

收稿日期:2018-02-19 修回日期:2018-07-11 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: 赵剑(通信作者),男,1980年出生,博士,教授。主要研究方向为多稳态机构设计、传感器及驱动器与车辆安全。E-mail:jzhao@dlut.edu.cn
作者简介:高仁璟,女,1964年出生,博士,教授。主要从事传感器与驱动器设计、左手材料、生物传感器、电路与系统等方面的研究。E-mail:renjing@dlut.edu.cn;李明丽,女,1989年出生,博士研究生。主要研究方向为多稳态俘能。E-mail:1096387147@qq.com;刘书田,男,1962年出生,博士,教授。主要从事结构与多学科优化、拓扑优化与材料设计。E-mail:stliu@dlut.edu.cn
基金资助:
国家自然科学基金资助项目（11372063，11572073，51575088）。

Design of Specific Properties for Bistable Structures Based on Pre-stress and Localization Reinforcement

GAO Renjing^1,2, LI Mingli², ZHAO Jian², LIU Shutian¹

1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024;
2. School of Automotive Engineering, Dalian University of Technology, Dalian 116024

Received:2018-02-19 Revised:2018-07-11 Online:2019-02-05 Published:2019-02-05

摘要/Abstract

摘要： 双稳态结构的构型和驱动位置设计是改善其跳转特性的关键技术。提出通过协同调控预压缩量、局部加强结构参数和驱动位置设计具有特定跳转性能的预压双稳态结构。首先，给出了局部加强预压双稳态结构的成型过程，并在理论分析的基础上得到特定性能预压双稳态结构的设计方程。然后，基于有限元方法验证了设计方程中设计参数（预压缩量，驱动位置，局部加强结构尺寸、位置）对双稳态结构跳转特性（偏置跳转力、拱高）的影响，并绘制了双稳态结构跳转特性的等值线图。最后，根据跳转特性等值线图设计并制备了拱高为3.57 mm，偏置跳转力为1.20 N的预压双稳态结构。实验结果表明：预压双稳态结构的拱高和偏置跳转力的设计值和实验值的误差分别为1.68%和11.67%，验证了预压双稳态结构设计结果的有效性。

关键词: 局部加强, 设计, 双稳态, 跳转, 预压

Abstract: Designing configurations and actuation positions of bistable structures is a key to improve its snap-through properties. Pre-compressed bistable structures with specific snap-through properties are designed by integrated regulating the pre-compression, parameters of local reinforcements and the actuation position. Firstly, the forming process of a pre-compressed bistable beam with local reinforcements is introduced and the design equation of pre-compressed bistable structures with special properties is presented on the basis of theoretical analysis. Then, based on the finite element method, the effects of design parameters (the pre-compression, actuation position, sizes and position of local reinforcements) in the design equation on snap-through properties (the offset snapping force and the arch height) are verified, and the contour map of snap-through properties is drawn. Finally, a pre-compressed bistable beam with expected arch height 3.57 mm and the offset snapping force 1.20 N is designed and fabricated according to the contour map of snapping-through properties The experimental results show that the simulated arch height and offset snapping force of the tested pre-compressed bistable structure are only 1.68% and 11.67% deviated from the experimental results, verifying the accuracy of design results.

Key words: bistability, design, local reinforcement, preloading, snap-through

中图分类号:

S255

高仁璟, 李明丽, 赵剑, 刘书田. 基于预应力和局部加强结构的特定性能双稳态结构设计[J]. 机械工程学报, 2019, 55(3): 162-168.

GAO Renjing, LI Mingli, ZHAO Jian, LIU Shutian. Design of Specific Properties for Bistable Structures Based on Pre-stress and Localization Reinforcement[J]. Journal of Mechanical Engineering, 2019, 55(3): 162-168.

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基于预应力和局部加强结构的特定性能双稳态结构设计

Design of Specific Properties for Bistable Structures Based on Pre-stress and Localization Reinforcement

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