The multiple delaminations at different interfaces and their interactions should be described simultaneously in an accurate analysis approach of composite laminates under the multi-physics loading, but it is not studied thoroughly in the existing research works. A thermo-mechanical cohesive zone model is proposed to investigate the thermo-mechanical progressive growth of multiple delaminations in composite laminated plates. The multiple delaminations are simulated by the extended layerwise method (XLWM), and their thermo-mechanical progressive damage characterization is described by a discrete damage zone model (DDZM). A traction–separation law is employed to account for the heat flux transfer and mechanical load transfer across the delamination front. Several numerical examples of double cantilever beams and laminated plates are carried out to verify the proposed model for the contact and degradation problems. The thermo-mechanical progressive growth mechanism is also investigated for the multiple delaminations in composite laminated plates

复合材料层合板在多物理场载荷下的精确分析方法应同时描述不同界面处的多个分层及其相互作用，但在现有的研究工作中并未对此进行深入研究。提出了一种热机械粘合区模型来研究复合层压板中多个分层的热机械渐进式增长。通过扩展分层方法（XLWM）模拟了多个分层，并通过离散损伤区模型（DDZM）描述了它们的热机械渐进损伤特征。采用牵引分离定律来解释跨分层前沿的热通量传递和机械载荷传递。对双悬臂梁和层压板的几个数值例子进行了验证，以验证所提出的接触和退化问题的模型。还研究了复合层压板中多重分层的热机械渐进生长机制