CAJ | 학술논문

民机的结构设计必须按照耐久性/损伤容限要求进行，因其分析方法不像静强度那样成熟，适航当局在进行符合性审查时，特别注重全尺寸结构的疲劳和损伤容限试验。在部件试验中，因各部件试验可同时独立进行、载荷谱全面、加载点少及进度快，因此广泛用于民机研制过程中。部件疲劳试验的支持夹具提供与原结构相当的支持刚度。文章通过对某飞机襟翼子翼疲劳试验支持夹具的设计与分析，验证试验支持段可提供真实支持。研究表明，随着试验件与真实支持连接的静不定阶数增大，过渡段的设计趋于复杂。当支持夹具的设计过于复杂时，为保证结果准确有效，建议采用与试验件相连接的真实结构作为支持段。
민궤적결구설계필수안조내구성/손상용한요구진행，인기분석방법불상정강도나양성숙，괄항당국재진행부합성심사시，특별주중전척촌결구적피로화손상용한시험。재부건시험중，인각부건시험가동시독립진행、재하보전면、가재점소급진도쾌，인차엄범용우민궤연제과정중。부건피로시험적지지협구제공여원결구상당적지지강도。문장통과대모비궤금익자익피로시험지지협구적설계여분석，험증시험지지단가제공진실지지。연구표명，수착시험건여진실지지련접적정불정계수증대，과도단적설계추우복잡。당지지협구적설계과우복잡시，위보증결과준학유효，건의채용여시험건상련접적진실결구작위지지단。
Airworthiness authorities pay more attention on full-scale structure fatigue and damage tolerance test when certifying compliance of civil aircraft for its analytical methods are not so accurate as that of static strength. According to the merits that component tests could be operated separately and covering more complete load spectrum while with less loading point and short period, full-scale component structure tests are more and more adopted in civil aircraft development. In component test, the support fixture should provide the similar boundary conditions as true structure. In the paper, the designing of support fixture of full-scale aircraft structure fatigue test is investigated through analyzing the fatigue test of a sub-flap structure. The support fixture would become complicated when the order of statically indeterminate of the join in true structure increases. The conclusion that true structure with connection with specimen could be adopted as support fixture to ensure the results is carried out in the end.