材料力学是高等工科院校重要的技术基础课之一,这门课程的教学改革工作也一直是高校教学中不断探讨的主题。本文对材料力学课程教学方法、教学手段改革进行了研究与探讨。从教学体系、教学方法、教学手段等方面阐述了材料力学课程建设的思路和体会。

Nonlinear dynamic properties of super magneto s trict micro-actuator with asymmetry piecewise linear stiffness are analyzed. Th e effect of asymmetry piecewise linear stiffness of disc spring on nonlinear pro perties of micro-actuator is discussed. Based on the results of theoretic analy sis, we developed a super magnetostrict micro-actuator which can be used in pr ecision machinery.

本文主要分析稳态激振频带和筛体有载稳态振幅与振动系统动力学参数的关系,以及负荷改变时保持振动系统稳态工作的条件,为振动筛的动力参数的最优设计提供理论依据.