CAJ | 학술논문

为研究新一代运载火箭在垂直转运过程中所受地面风载荷的影响问题，采用时域法对运载火箭地面风载荷响应特性进行了分析。编制了基于谐波叠加法的地面风载荷时程样本模拟程序，并通过与目标功率谱函数的对比来验证程序的正确性。在建立火箭有限元分析模型的基础上，对火箭在不同参考风速下的动力响应进行了计算分析。分析结果表明：编制的基于谐波叠加法matlab程序能很好的模拟脉动风载荷，火箭风载荷动力响应随参考风速的增加而增大。
위연구신일대운재화전재수직전운과정중소수지면풍재하적영향문제，채용시역법대운재화전지면풍재하향응특성진행료분석。편제료기우해파첩가법적지면풍재하시정양본모의정서，병통과여목표공솔보함수적대비래험증정서적정학성。재건립화전유한원분석모형적기출상，대화전재불동삼고풍속하적동력향응진행료계산분석。분석결과표명：편제적기우해파첩가법matlab정서능흔호적모의맥동풍재하，화전풍재하동력향응수삼고풍속적증가이증대。
In order to analyze the ground wind acting on the new generation of launch vehicle when the launch vehicle is in a vertical state, the time-domain method is used. The program for wind histories modeling is given based on the harmony superposition method. The reliability of the program is proved by comparing with the objective power spectrum density. The finite element analysis modal of the launch vehicle is built and the launch vehicle’s structural dynamic response is calculated under different ground wind speed. The results indicated that the matlab program based on the harmony superposition method can accurately simulate the wind histories and the launch vehicle's response increases with the increase of ground wind speed.