Plane State of Stress

The state space method coupled with the technique of differential quadrature (SSDQM) was presented for plane stress problems.

针对平面应力问题，提出了利用状态空间法和微分积分法的混合解法（SSDQM）。

The state equation of Pieoelectric beam is deduced directly from a piezoelectric physical equation in terms of a plane stress problem.

按平面应力问题，直接从压电物理方程出发，导出了压电梁的状态方程。

Based on the analytical formula of the plane stress state, a simple and direct distinguishing method is derived with regard to the direction in which the maximal extremes lie.

本文根据平面应力状态的解析式，推导出了一种判别最大应力极值所在方向的简捷方法。