论文部分内容阅读
对复合材料帽型加筋板的压缩稳定性进行了试验研究,并在包含复合材料多种损伤模式和胶层损伤的条件下,对加筋板失稳及损伤演化特征开展了有限元分析。试验与模拟结果表明:在加筋壁板失稳前,基体、纤维、加强筋和壁板之间的胶层均未产生明显损伤,加筋板的失稳会导致快速的损伤演化;壁板近表面损伤较内部严重,胶层界面脱粘降低了壁板的极限承载能力;考虑损伤的模拟结果与试验相符性好,证明了该方法的可行性和有效性。
The compression stability of the composite hat-stiffened plate was studied. The finite element analysis of the instability and damage evolution of the stiffened plate was carried out under various damage modes and damage of the composite layer. The experimental and simulation results show that before the stiffened wall is instable, no significant damage occurs to the bond line between the matrix, fiber, stiffener and wall, and the instability of the stiffened plate leads to rapid damage evolution. The near-surface damage is more serious than the interior, and the debonding of the adhesive layer reduces the ultimate bearing capacity of the panel. The simulation results of the damage are in good agreement with the test, which proves the feasibility and effectiveness of the method.