【新文速递】2025年10月9日固体力学SCI期刊最新文章

今日更新：Composite Structures 1 篇，Composites Part A: Applied Science and Manufacturing 1 篇Composite StructuresProgressive damage ana lysis of open-hole CFRP laminates under combined tension-shear loadingMahesh P., Viswanath Chinthapenta, Gangadharan Raju, Ramji M.doi:10.1016/j.compstruct.2025.119676开孔CFRP复合材料在拉剪复合荷载下的渐进损伤分析Progressive damage and strength a nalysis in an open-hole tension test is crucial in designing carbon fiber-reinforced polymer (CFRP) composites. In practical applications, loading is of multi-axial in nature, making the damage process more complex in CFRP structures. This work proposes a generic continuum damage mechanics-based 3D progressive damage model incorporating the LaRC05 failure criteria. The proposed formulation, coupled with cohesive surface modelling, is benchmarked against existing open-hole CFRP laminate test results under a combined tension-shear loading scenario. Later, the effect of laminate layup on the strength, damage initiation, and evolution is studied by considering two types of QI, a 0°, and 45°dominated layups. As observed in the experimental studies, the proposed model can predict distinct dominant failure mechanis ms and also the critical loading angle at which the failure mechanis m switches from one to another. Further, in case of a combined loading, the damage modes, such as fiber kinking and the extent of fiber splitting, dominate the failure, which is well-captured by the proposed model. Further, it is able to predict the failure strengths accurately for all combined loading scenarios and laminate types with a maximum error of 14.7%, which confirms the robustness and accuracy of the proposed model.在设计碳纤维增强聚合物（CFRP）复合材料时，裸眼拉伸试验中的渐进损伤和强度分析是至关重要的。在实际应用中，载荷是多轴向的，这使得CFRP结构的损伤过程更加复杂。这项工作提出了一个通用的基于连续损伤力学的三维渐进损伤模型，该模型结合了LaRC05失效准则。提出的配方，结合粘性表面模型，以现有的裸眼CFRP复合材料在拉伸-剪切复合加载情景下的试验结果为基准。然后，通过考虑0°和45°两种主要的QI类型，研究了层合层对强度、损伤发生和演化的影响。实验结果表明，该模型能够预测出不同的主导破坏机制，以及不同破坏机制切换的临界加载角。此外，在复合加载情况下，损伤模式，如纤维扭结和纤维分裂的程度，主导了破坏，这是由所提出的模型很好地捕捉。此外，该模型能够准确预测所有组合加载场景和层压类型的破坏强度，最大误差为14.7%，验证了所提模型的鲁棒性和准确性。Composites Part A: Applied Science and ManufacturingThrough-thickness crystallinity gradient controls warpage reduction in CF/PAEK via in-situ consolidation automated fiber placementYe Wang, Zhibo Xin, Jie Yuan, Yugang Duan, Hong Xiao, Fanghong Yang, Daijun Zhang, Fuping Lidoi:10.1016/j.compositesa.2025.109310通过原位固结自动纤维放置，通过厚度结晶度梯度控制CF/PAEK的翘曲减少Aiming at reducing the warpage that occurs during in-situ consolidation automated fiber placement (ISC-AFP) of thermoplastic composites, this article explores, for the first time, the through-thickness crystallinity distribution characteristics of laminate and its effect on warpage. A tool-temperature-compensation isothermal consolidation (TTC-IC) technology is proposed to achieve warpage suppression. The research results indicate that laminate crystallinity decreases gradually from the bottom to the top layer. At a fixed initial consolidation temperature, higher tool temperatures (Ttool) reduce the through-thickness temperature gradient during consolidation. However, as Ttool increases, the through-thickness crystallinity gradient of the laminate also increases, resulting in greater warpage. This indicates that crystallinity gradient dominates the warpage. Via the proposed TTC-IC technology, the through-thickness crystallization gradient of the laminate was reduced, achieving a reduction of 33.33% in warpage and 46.1% in porosity. This study addresses the knowledge gap in warpage formation mechanis ms for laminates fabricated via ISC-AFP and introduces a novel in-situ technological approach for warpage control为了减少热塑性复合材料原位固结自动铺放纤维（ISC-AFP）过程中发生的翘曲，本文首次探讨了层压板的结晶性分布特征及其对翘曲的影响。提出了一种刀具温度补偿等温固结（TTC-IC）技术来实现翘曲抑制。研究结果表明，层压板结晶度从底层到顶层逐渐降低。在固定的初始固结温度下，较高的工具温度（Ttool）降低了固结过程中贯穿厚度的温度梯度。然而，随着Ttool的增加，层压板的全厚度结晶梯度也增加，导致更大的翘曲。这表明结晶梯度支配翘曲。通过提出的TTC-IC技术，降低了层压板的全厚度结晶梯度，翘曲量降低了33.33%，孔隙率降低了46.1%。本研究解决了通过iscc - afp制造的层压板翘曲形成机制的知识缺口，并介绍了一种新的原位翘曲控制技术方法 来源：复合材料力学仿真Composites FEM