CAJ | 학술논문

通过分析不同缩比模型在工程中的应用条件，利用相似理论和工程梁模型，对导弹发射过程的动态响应与截面载荷做了相似条件研究和模态参数对载荷相似性的影响分析，指出对于动态位移和截面弯矩需要不同振型阶次的相似要求，工程经验和实际算例表明载荷相似需要二到三阶的模态参数相似，提出了可用于发射过程移动载荷分析的缩比模型弱相似条件及质量分布修正方法。
통과분석불동축비모형재공정중적응용조건，이용상사이론화공정량모형，대도탄발사과정적동태향응여절면재하주료상사조건연구화모태삼수대재하상사성적영향분석，지출대우동태위이화절면만구수요불동진형계차적상사요구，공정경험화실제산례표명재하상사수요이도삼계적모태삼수상사，제출료가용우발사과정이동재하분석적축비모형약상사조건급질량분포수정방법。
The precondition of applying scaled models in engineering was analyzed in this paper. Similar condition was studied for dynamic response and section load during launch of a missile, based on similar theory and engineering beam theory. And how modal parameters affect load similarity was deduced also. The result shows that number of mode similarity need was different in order to make dynamic displacement or section moment similar between different models. Engineering experience and numerical calculation indicate that two or three mode is needed for the sake of load similarity. Scaled mode’s design request was proposed. The design request was aimed at make scaled mode suitable for analyze moving external force during launch of a missile.