STRENGTH TEST AND NUMERICAL SIMULATION OF CFRP SQUARE TUBE SINGLE-NAIL CONNECTION STRUCTURE

Abstract

Abstract: The compression test of four kinds of carbon fiber laminated square tube single-nail connection structures with different bolt diameters was carried out, and the compressive ultimate failure load and load-displacement curve of the joint structure were obtained. The energy evolution-based composite square tube bolt connection structure was established respectively. The progressive damage analysis model simulates the failure process and failure mode of the composite square pipe joint structure under compressive load. The stress distribution and damage propagation of the CFRP laminated square tube under different bolt diameters are analyzed. Based on the verified finite element model, the influence of the change of the ply angle on the ultimate compressive load of the CFRP square tube is analyzed.

Key words: CFRP square tube, single nail connection, progressive damage analysis, ultimate compression load

CLC Number:

TB332

ZHU Xiu-jie, XIONG Chao, YIN De-jun, YIN Jun-hui. STRENGTH TEST AND NUMERICAL SIMULATION OF CFRP SQUARE TUBE SINGLE-NAIL CONNECTION STRUCTURE[J]. Fiber Reinforced Plastics/Composites, 2019, 0(8): 35-41.

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