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一、前言空间宇航事业的发展,促进新材料、新工艺和新产品的不断出现。这些新技术的出现对产品结构强度计算及强度试验技术提出新的课题。在结构强度试验领域中,作为试验重要手段之一的液压加载设备,也有新的发展。特别是近十多年来,电液伺服控制系统在试验技术中获得广泛应用,为自动加载开拓新途径。它使试验设备应用范围扩大,试验精度提高,且能与计算机相结合实现对试验过程的全面控制。就结构件静力试验外载形式而言,主要有两类:一类是施加外力(指轴向力、侧向力)的试验。试验对象是壳体、机架等构件。一类是充内压的容器或导管的试验。由于它们加荷内容不同,要求有不同的加载设备。本文只讨论前一类液压加载设备。先对目前已有的一些液压加载装
I. Introduction The development of space and space undertaking promotes the continuous emergence of new materials, new techniques and new products. The advent of these new technologies has raised new topics for the calculation of the strength of product structure and strength testing techniques. In the field of structural strength testing, as one of the important means of testing hydraulic loading equipment, there are new developments. Especially in the past ten years, the electro-hydraulic servo control system has been widely used in the test technology, which opens up new ways for automatic loading. It expands the scope of application of test equipment, improves test accuracy, and combines with the computer to achieve full control of the test process. There are mainly two types of static load tests on structural members: one is the test of applying external forces (axial force and lateral force). The test object is the shell, frame and other components. One type is a test of an internally pressurized container or catheter. Due to their different loading content, different loading devices are required. This article only discusses the former type of hydraulic loading equipment. First on some of the existing hydraulic loading equipment