CAJ | 학술논문

通过对冬季覆盖厚度为0 .006 mm 的聚乙烯残地膜纵向、横向和直角撕裂拉伸负荷,以及断裂伸长率等力学性能的测试,获得了残地膜力学本构特性. 利用有限元软件 ANSYS对拾膜杆齿捡膜时地膜的变形和应力应变情况进行仿真和分析. 结果表明:冬季覆盖地膜纵向的拉伸强度大于横向的拉伸强度和直角撕裂的拉伸强度;拾膜时,杆齿端部的地膜变形最大,应力应变最大值都发生在与杆齿中部接触的地膜处.
통과대동계복개후도위0 .006 mm 적취을희잔지막종향、횡향화직각시렬랍신부하,이급단렬신장솔등역학성능적측시,획득료잔지막역학본구특성. 이용유한원연건 ANSYS대습막간치검막시지막적변형화응력응변정황진행방진화분석. 결과표명:동계복개지막종향적랍신강도대우횡향적랍신강도화직각시렬적랍신강도;습막시,간치단부적지막변형최대,응력응변최대치도발생재여간치중부접촉적지막처.
Through the testing of the mechanical properties of the longitudinal , transverse and orthogonal tear tensile load and tensile elongation for the polyethylene mulching film covered in winter which thickness is 0.006mm, the mechanical constitutive properties of the mulching film were obtained .The finite element software ANSYS was used to emulating and discussing the deformation and stress strain for the mulching film when was picked up by the mulching film pole tooth , the results show that: for the mulching film in winter , the tensile strength of longitudinal is greater to the transverse and the rectangular tear;the maximum variant of the mulching film was that it was picked up on the top of the mulching film pole tooth , the maximum of the deformation and stress strain was that it was picked up at the junction of the film and the central of pole tooth .