CAJ | 학술논문

建立了热固性树脂基复合材料固化过程温度和热应力场分析的数学模型，采用有限元方法，进行了三维非稳态数值求解。通过与已有实验结果的比较，验证了数学模型和计算方法的正确性。获得了3234/T300层合板固化过程中内部温度及热应力分布，分析了保温时间、升温速率、铺层设计等对温度、内部热应力的影响。数值计算结果表明：预固化时间越长，层合板内温度梯度越小，热应力峰值越低；升温速率越大，层合板内温度梯度越大，热应力峰值越大；采用对称铺层可降低层合板内部温度梯度和热应力。
건립료열고성수지기복합재료고화과정온도화열응력장분석적수학모형，채용유한원방법，진행료삼유비은태수치구해。통과여이유실험결과적비교，험증료수학모형화계산방법적정학성。획득료3234/T300층합판고화과정중내부온도급열응력분포，분석료보온시간、승온속솔、포층설계등대온도、내부열응력적영향。수치계산결과표명：예고화시간월장，층합판내온도제도월소，열응력봉치월저；승온속솔월대，층합판내온도제도월대，열응력봉치월대；채용대칭포층가강저층합판내부온도제도화열응력。
A three-dimensional unsteady finite element analysis model is developed for the simulation of the temperature and thermal stress fields of the thermosetting resin matrix composite laminate during the curing process. The correctness of the numerical model and methodology is verified by comparing with the available experimental results. The distributions of temperature and thermal stress in 3234/T300 composite laminates during curing process are numerically predicted. The effects of the pre-curing time, heating rate and the stacking sequence on the temperature and thermal stress fields during curing process are analyzed. The numerical computation. results indicate that the temperature gradient and thermal stress in the laminates decrease with the increasing pre-curing time and decreasing heating rate. Using symmetrical stacking sequence can also decrease the temperature gradient and thermal stress in composite laminates.