CAJ | 학술논문

基于二维Hashin失效准则，在充分考虑低速冲击下层合板纤维和基体拉压失效等损伤模式下，计及材料退化并引入损伤因子，运用ABAQUS软件建立复合材料层合板低速冲击有限元模型。运用该模型深入研究层合板低速冲击问题，考察其动态响应和损伤演化过程，数值结果和实验值吻合良好，验证模型的合理性和准确性。在此基础上，通过对层合板进行各冲击工况的数值模拟，详细讨论冲击能量、铺层形式等参数对层合板低速冲击动态响应和损伤特性的影响规律。
기우이유Hashin실효준칙，재충분고필저속충격하층합판섬유화기체랍압실효등손상모식하，계급재료퇴화병인입손상인자，운용ABAQUS연건건립복합재료층합판저속충격유한원모형。운용해모형심입연구층합판저속충격문제，고찰기동태향응화손상연화과정，수치결과화실험치문합량호，험증모형적합이성화준학성。재차기출상，통과대층합판진행각충격공황적수치모의，상세토론충격능량、포층형식등삼수대층합판저속충격동태향응화손상특성적영향규률。
A finite element model for analyzing low velocity impact damage of composite laminates was established base on ABAQUS software platform, the typical failure modes, such as fiber break, matrix cracking were simulated by employing the two-dimensional Hashin criterion, material degradation and damage factor were taking into account in this model. By adopting this model, the dynamic response and damage propagation of laminates were studied. The numerical results well agree with the experimental results and thus verify the accuracy of the model. On this foundation, laminates under various impact conditions were simulated. Parametric studies were conducted to study the effects of the impact energy and stacking sequence on the dynamic response and the damage of composite laminates under low velocity impact.