CAJ | 학술논문

根据机械系统应力响应与动态外载荷在频域内的关系，提出基于动应力响应的动态载荷识别方法。对梁结构试样施加多频率成分的激励，并用应力频响函数法识别施加的激励载荷，所识别的载荷精度较高。分析转向架构架轴箱弹簧载荷、动应力载荷识别点实际线路测试数据及城市轨道交通车辆ATP梁结构振动加速度、动应力识别点实际线路测试数据，分析结果验证并表明该方法在工程上具有较好的应用前景。
근거궤계계통응력향응여동태외재하재빈역내적관계，제출기우동응력향응적동태재하식별방법。대량결구시양시가다빈솔성분적격려，병용응력빈향함수법식별시가적격려재하，소식별적재하정도교고。분석전향가구가축상탄황재하、동응력재하식별점실제선로측시수거급성시궤도교통차량ATP량결구진동가속도、동응력식별점실제선로측시수거，분석결과험증병표명해방법재공정상구유교호적응용전경。
A dynamic load identification method , based on the relationship between stress response and dynamic external loads in frequency domain of a mechanical system ,is proposed by using the dynamic stress response . A set of load which contains multiple excitation frequencies has been applied to a beam structure , where the exciting loads have been precisely identified by using the stress frequency response function method . Through this method , an analysis is conducted on the loads of axle box spring on bogie , test data of dynamic stress load identification measurement points and vibration acceleration of ATP structure on metro vehicles . Analysis re‐sults prove that the proposed method has a promising prospect in engineering application .