CAJ | 학술논문

风载荷是大型车载雷达天线结构所承受的主要载荷，其抗风稳定性设计直接关系到整机结构的安全性，是决定结构总体设计方案成败的关键因素。这类问题目前在雷达结构设计中尚未形成有效的分析方法，通常采用的力矩法、多体动力学法和基于线性问题的反复迭代法均存在一定的局限。文中针对国内某大型车载雷达的抗风稳定性问题进行研究，为克服现有分析方法的局限，建立了一套基于多接触算法的非线性有限元分析方法。通过对车载雷达结构的合理简化以及多支撑腿边界条件的细致考评和准确模拟，获取了大型车载雷达的抗风力学响应。首次考察了支撑腿接触力、抬腿量和上装重心随风向和风力的变化规律，分析结果可为此类大型车载雷达的抗风稳定性设计提供一定的理论基础和设计指导。
풍재하시대형차재뢰체천선결구소승수적주요재하，기항풍은정성설계직접관계도정궤결구적안전성，시결정결구총체설계방안성패적관건인소。저류문제목전재뢰체결구설계중상미형성유효적분석방법，통상채용적력구법、다체동역학법화기우선성문제적반복질대법균존재일정적국한。문중침대국내모대형차재뢰체적항풍은정성문제진행연구，위극복현유분석방법적국한，건립료일투기우다접촉산법적비선성유한원분석방법。통과대차재뢰체결구적합리간화이급다지탱퇴변계조건적세치고평화준학모의，획취료대형차재뢰체적항풍역학향응。수차고찰료지탱퇴접촉력、태퇴량화상장중심수풍향화풍력적변화규률，분석결과가위차류대형차재뢰체적항풍은정성설계제공일정적이론기출화설계지도。
Wind load is the main load that the radar antenna structure of large vehicle-borne radar withstands . The wind-resistant stability is directly related to the safety of the whole structure and is a key factor which de-termines the success of the overall design .No effective analysis method has been formed for such problems in radar structure design .Methods usually adopted such as torque law method , multi-body dynamics method and iterative method based on linear problems all have some limitations .In this paper , the stability of a large do-mestic vehicle-borne radar is investigated , and a set of nonlinear finite element analysis methods based on multi-contact algorithm are established to overcome the limitations of existing analysis methods .By reasonable simplification of the vehicle-borne structure and detailed simulation of the boundary conditions of multi-sup-porting legs , the wind-resistant mechanical response of the large vehicle-borne radar is obtained .The correla-tion of the contact forces , rising displacements of supporting legs and the gravity center of radar antenna with the direction and magnitude of wind force is studied for the first time .The results provide certain theoretical basis and design guidance for the wind-resistant stability design of large vehicle-borne radars .