目的 解决单次跌落分析难以完全揭示产品在连续跌落测试中的真实表现,从而提升电子产品的开发效率。方法 为了解决这一问题,本研究针对某头戴式耳机的充电底座,基于RADIOSS进行连续跌落仿真的研究。通过高速摄影机拍摄真实的多次连续跌落过程,与仿真结果进行对比,来验证连续跌落仿真的准确性。结果 真实跌落中结构上盖和底盖的开口最大值为5.39 mm,仿真中的开口最大值为5.25 mm,仿真与实测数据基本相当。实验中螺丝柱的断裂位置也与仿真中的高应力区域相互对应。改进后的设计也顺利通过了测试。结论 这种方法更贴近真实测试场景,全面考虑了残余应力、塑性应变和损伤的累积,从而提供了更准确的可靠性分析结果。通过采用这种方法,不仅可以缩短产品研发周期,而且能够显著提升产品的质量,为用户带来更加可靠和持久的使用体验。
Abstract
The work aims to deal with the issue that single-drop analysis often fails to fully reveal a product's true performance during continuous drop tests, so as to improve the development efficiency of electronic products. Focusing on the charging base of an over-head headphones, continuous drop simulations were carried out with RADIOSS. High-speed cameras were used to capture the actual drop process, and the simulation results were compared to validate the accuracy of the continuous drop simulation. In the real drop test, the maximum opening of the structural upper cover and lower cover was 5.39 mm, while the maximum opening in the simulation was 5.25 mm, the simulation data was basically consistent with the measured data. Additionally, the fracture location of the screw boss in the experiment also corresponded to the high-stress area in the simulation. This method closely mirrors real-world testing scenarios by comprehensively considering the accumulation of residual stress, plastic strain and damage, thereby providing more accurate reliability analysis results. By adopting this approach, not only can the product development cycle be shortened, but product quality can also be significantly improved, offering users a more reliable and durable experience.
关键词
连续跌落 /
数值仿真 /
损伤累积 /
动能松弛
Key words
continuous drop /
numerical simulation /
damage accumulation /
dynamic relaxation
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 蒲雪. 基于ANSYS/LS-DYNA的电子产品跌落仿真研究[D]. 兰州: 兰州交通大学, 2016: 10-15.
PU X.Research on Electronic Product Drop Simulation Based on ANSYS/LS-DYNA[D]. Lanzhou: Lanzhou Jiatong University, 2016: 10-15.
[2] 李旭珍, 刘丙金, 马安良, 等. 电子产品装联可靠性验证标准研究[J]. 企业科技与发展, 2022(12): 25-27.
LI X Z, LIU B J, MA A L, et al.Research on Reliability Verification Standard of Electronic Product Assembly[J]. Sci-Tech & Development of Enterprise, 2022(12): 25-27.
[3] 王忠强, 马乙文, 戴阳, 等. 仿真技术在电子产品结构设计中的应用[J]. 现代制造技术与装备, 2023, 59(1): 154-156.
WANG Z Q, MA Y W, DAI Y, et al.The Application of Simulation Technology in the Structural Design of Electronic Products[J]. Modern Manufacturing Technology and Equipment, 2023, 59(1): 154-156.
[4] DONG L T, ZHANG Z M, JIANG Y, et al.Drop Damage Analysis of Automotive High-Pressure Composite Hydrogen Storage Cylinders[J]. Journal of Energy Storage, 2024, 86: 111181.
[5] 宋畅, 范正炼, 马荣鑫, 等. 基于跌落仿真的集成灶包装优化设计[J]. 包装工程, 2024, 45(19): 283-290.
SONG C, FAN Z L, MA R X, et al.Optimization Design of Integrated Stove Packaging Based on Drop Simulation[J]. Packaging Engineering, 2024, 45(19): 283-290.
[6] 范正炼, 马荣鑫, 宋畅. 跌落仿真技术在家电产品品质提升中的应用[J]. 家电科技, 2023(4): 104-108.
FAN Z L, MA R X, SONG C.Application of Dropping Simulation Technology in Improving the Quality of Home Appliances[J]. Journal of Appliance Science & Technology, 2023(4): 104-108.
[7] KANG B H, JO B H, KIM B G, et al.Linear and Nonlinear Models for Drop Simulation of an Aircraft Landing Gear System with MR Dampers[J]. Actuators, 2023, 12(7): 287.
[8] 刘振. 冲击载荷作用下芯片封装的板级-整机可靠性研究[D]. 长沙: 中南大学, 2022: 42-58.
LIU Z.Study on board level-product level reliability of chip packaging under drop impact[D]. Changsha: Central South University, 2022: 42-58.
[9] 张海龙. 基于ABAQUS的服务器跌落仿真与实验研究[J]. 机械工程师, 2021(11): 128-129.
ZHANG H L.Research on Drop Test and Simulation of Server Based on ABAQUS[J]. Mechanical Engineer, 2021(11): 128-129.
[10] 林丽. 头戴式耳机跌落冲击的仿真分析与实验[J]. 包装工程, 2021, 42(9): 37-43.
LIN L.Simulation Analysis and Experimental Study for Headset Drop Impact[J]. Packaging Engineering, 2021, 42(9): 37-43.
[11] KIM H T, SEO J M, SEO K W, et al.Effect of Material Hardening Model for Canister on Finite Element Cask Drop Simulation for Strain-Based Acceptance Evaluation[J]. Nuclear Engineering and Technology, 2022, 54(3): 1098-1108.
[12] 伍瑾, 卢富德, 王彪, 等. 易损件在连续跌落冲击载荷作用下的动力学响应[J]. 振动与冲击, 2023, 42(20): 275-279.
WU J, LU F D, WANG B, et al.Dynamic Response of Vulnerable Part under the Continuous Drop Impact Loads[J]. Journal of Vibration and Shock, 2023, 42(20): 275-279.
[13] 张鹏娥, 赵林, 纪春荣, 等. 基于LS-DYNA的空调连续跌落仿真研究[J]. 力学与实践, 2020, 42(1): 60-65.
ZHANG P E, ZHAO L, JI C R, et al.Sequential Drop Simulation of Air Conditioning Based on ls-Dyna[J]. Mechanics in Engineering, 2020, 42(1): 60-65.
[14] 彭统向, 王传薪, 史传强, 等. 冰箱连续多次跌落仿真方法的研究[C]// 2023年中国家用电器技术大会论文集, 宁波, 2023: 401-408.
PENG T X, WANG C X, SHI C Q.Research on Continuous Dropping Simulation of Refrigerator[C]// Proceedings of the 2023 China Household Appliance Technology Conference, Ningbo, 2023:401-408.
[15] 陈运东, 索小争, 孙靖超, 等. 基于RADIOSS求解器的同模型多次跌落仿真方法研究[C]// 2016年中国家用电器技术大会论文集. 宁波, 2016: 574-577.
CHEN Y D, SUO X Z, SUN J C, et al.Research on the Method of Multiple Drop Simulations of the Same Model Based on RADIOSS Solver[C]// Collected Papers of the 2016 China Household Appliance Technology Conference. Ningbo, 2016: 574-577.
[16] 孙靖超, 陆淑君, 李健, 等. Radioss基础理论与工程高级应用[M]. 北京: 机械工业出版社, 2021: 10-13.
SUN J C, LU S J, LI J, et al.Radioss Basic Theory and Advanced Application of Engineering[M]. Beijing: China Machine Press, 2021: 10-13.
PDF(2728 KB)
渝公网安备 50010702501716号 渝ICP备15012534号-2
