基于MOOSE的有限元仿真在树脂基复合材料固化变形预测中的应用

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Application of MOOsE-based finite-element simulation to the prediction of curing deformation in resin-matrix composites

LI Jianjun 1* ，MEI Lixia’，SUN Tuo’，WEN Pihua²，HUANG Wang² （1. Institute of Jiangxi Aeronautics，Nanchang 330006；2.Nanchang University，Nanchang 330031）

Abstract：To addresses the challengeof accurately predicting residual strains/stresses during thecuring ofresin-based composite materials，athermo-chemo-mechanical staggered-coupling framework built on theopen-source MOOSE finite-element library was developed.The thermo-chemo module employs transientheatconduction coupled with Kamal curekinetics，while volumetric shrinkageandresin modulusevolutionaredescribed bythree models： CHILE（α），CHILE 0 Tg ），andaPath-dependentformulation.Equivalentorthotropic propertiesareassembledviaSCFM，andvolumetricshrinkage is mapped to eigenstrains.Using an AS4/8552laminate as abenchmark，we compare curing responses predicted by the diferentconstitutive descriptions.Resultsshow good agreement between the proposed framework and ABAQUS.The CHILEmodelsexhibit asingle hardening eventnear theendof thesecond heating stage，whereas the Path-dependent modelhardensduring bothheatingandcooling，with morepronouncedhysteresis inthelaminate.Acrossmodels，the final through-thicknesshrinkageissimilarbutfollowsdiferenttemporalevolutions;theterminalfiber-directionshrinkagesatisfiesPath-dependent >CHILE（Tg）>CHILE（∝） ：

Keywords：composite curing; CHILE; path-dependent;MOOSE; SCFM; residual strain.

1引言

热固性树脂基复合材料因其高比强度/比刚度与可设计性强，在航空航天、汽车与风电等领域广泛应用，但其制造过程伴随热-化-力多物理场耦合：温度梯度与放热、化学收缩以及各向异性共同驱动残余应力与固化变形，对大型厚壁构件的尺寸精度与服役寿命影响尤甚。（剩余6509字）