大载荷缠绕杆件的拉伸和压缩性能

Axial Compression and Tensile Investigation of Large Load Flimant Winding Tubes

采用缠绕成型的方法制备了碳纤维/环氧树脂复合材料杆件,对杆件进行了拉伸、压缩试验,并且对缠绕用原材料的性能进行测试。结果表明:缠绕原材料的拉伸及层剪性能优异,缠绕成型的复合材料杆件力学性能较高,压缩与拉伸强度分别大于400与240 MPa,杆件端头是应力集中区域,端头的设计连接以及复合材料的层间性能是影响复合材料杆件拉伸、压缩性能的重要因素。

Filament winding process was adopted to fabricate the carbon/epoxy tubes and the tubes were tested by axial compression and tensile experiment. Besides, the meehanieal perpoties of the fliamant winding composites was also tested. The results show that the tensile and interlaminal shear strengths of composite are outstanding. The composite tubes provide excellent axial compression and tensile strength, which are more than 400 MPa and 240 MPa respec- tively. The eoneeeting form of the tubes and composites laminar shearing strength play important roles in affecting the axial compression and tensile strength of the tubes.