薄壁管件周向力学性能测试装置及方法

Device and Method for Testing Circumferential Mechanics Performance of a Thin Walled Tube

为克服现有技术方法中难以精确测得薄壁管件周向力学性能的弊端,本文提出了一种管件周向力学性能测试装置及测试方法,介绍了该装置的结构及测试原理,并基于有限元软件ABAQUS模拟了整个测试过程。测试结果表明该测试方法的有效性和可行性。最后利用该测试装置对69111不锈钢管件进行了挤胀实验,获得了薄壁管件的周向力学性能数据。该测试方式能有效解决材料各向异性造成的小尺寸薄壁管件周向力学性能的测试技术难题,能直接、有效的测得薄壁管件的周向力学性能。

Circumferential mechanics performance of a thin walled tube is hard to test accurately using existing technology. So a set of device was designed and a way was put forward in order to overcome this drawback. Introduction of device structure and testing principle is presented in this paper and simulation of whole expansion testing process based on a finite element software ABAQUS. Testing results demonstrate the feasibility and efficiency of this method. Finally,the testing device was applied to expand a hole of tube specimen made of 69111 stainless steel and circumferential mechanics performance data were obtained. This testing method can effectively solve the testing technical problem on the circumferential mechanics performance of a thin walled tube due to the material anisotropy. Circumferential mechanics performance of a thin walled tube may be obtained directly and effectively.