摘要
针对目前使用表面测量仪数字化表征工程表面的方法中对表面拟合方面存在的不足,采用Pro/E软件对降噪、精简后的实测表面数据进行包络处理形成小平面特征,进而基于双三次B样条算法进行曲面拟合,然后生成实体,最后建立了工程表面与刚性平面的有限元接触模型,分析得出在不同材料参数下,结合面真实接触面积随载荷的变化关系。结果与前人的研究相符合,为下一步的机械结合面对维修装配性能的影响的研究打下了基础,具有一定的工程意义。
According to the existence problems of surface fitting on the current surface measurement method of digital characterization of engineering surfaces,the Pro/E software is used to envelope processing on measured data which is reduced noise and volume,and formed of small plane characteristics.Then the small plane is fitted based on bi-cubic B-spline algorithm and generated entity.A finite elements contact model of engineering surface and the rigid plane is established.Analysis result gets the relationship of real contact area with the change of load with different material parameters.Generally,comparison between computed and previous studies ＇results showed good agreement,which lays a foundation for the next step of study on the influence of the repair assembly performance upon mechanical joint surfaces and has a certain engineering significance.
出处
《机械设计与制造》
北大核心
2014年第3期114-116,119,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(51075395)
