DISCUSSION ON THE APPLICABILITY OF TRANSFORMATION EQUATIONS FOR PLANE PROBLEM

The transformation equation for plane stress (strain) is the main teaching content of the stress (strain) analysis of the mechanics of materials. Although the transformation equation is derived based on the specific stress (strain) state, it is not limited to the plane stress (strain) state in various applications, including examples and exercises. In order to clarify students' common doubts, this paper uses a simple method to explain the problem so as to provide reference for teaching.