基于ANSYS内燃机活塞载荷优化研究
涂盼盼，何毅斌*，高帅，胡高瑞，赵德顺，甘沐阳
（武汉工程大学 机电工程学院，湖北 武汉 430073）
摘要：针对内燃机正常工况下活塞所受应力远小于材料抗拉强度、使得内燃机输出功率并非最高的问题，提出内燃机活塞载荷优化方案。首先通过Pro/E三维建模软件对内燃机活塞进行简化建模，然后通过有限元分析方法模拟在最苛刻工作位置处工况下活塞整体的受力图、安全系数图，以此来判断活塞的强度是否处于安全环境，并且通过多次改变载荷获得模拟实验数据、安全系数变化趋势图和最大等效应力图，最后分析得出内燃机活塞在安全环境下的所能承受最大载荷。研究结果表明，通过比较模拟实验数据优化后载荷1.5 MPa比传统载荷0.75 MPa下的内燃机拥有更高输出功率，内燃机可以得到更充分利用。
关键词：内燃机；活塞；载荷；ANSYS
中图分类号：U262.1 文献标志码：A doi：10.3969/j.issn.1006-0316.2018.12.016
文章编号：1006－0316 (2018) 12－0056－03
Based on ANSYS Internal Combustion Engine Piston Load Optimization Study
TU Panpan，HE Yibin，GAO Shuai，HU Gaorui，ZHAO Deshun，GAN Muyang
( School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430073, China )
Abstract：In view of the internal combustion engine piston stress under normal working condition of the piston suffered far less than the tensile strength of piston material, makes the internal combustion engine power output is not an issue of supreme, internal combustion engine piston load optimization scheme is put forward. First through Pro/E 3d modeling software to simplify the modeling, the internal combustion engine piston and then simulated by the method of finite element analysis under the most demanding work location conditions piston by trying to whole, piston figure overall safety coefficient, in order to determine whether the strength of the piston in the security environment, and changing load simulation data obtained by several times, the safety coefficient change trend diagram and the maximum effect to, such as the final figure from safety coefficient analysis of internal combustion engine piston in a safe environment can withstand maximum load. The results show that the internal combustion engine can be more fully utilized by comparing the simulated experimental data with a higher output power of 1.7 MPa than the traditional one under 1 MPa.
Key words：internal combustion engine；piston；load；ANSYS
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收稿日期：2018－01－18
基金项目：武汉工程大学第九届研究生教育创新基金项目（CX2017026）
作者简介：涂盼盼（1994－），男，湖北安陆人，硕士研究生，主要研究方向为机械设计优化和有限元分析。*通讯作者：何毅斌（1966－），男，湖北武汉人，博士（后），教授、硕士生导师，主要研究方向为机械零件故障诊断分析研究、机械设计仿真优化分析。
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