材料力学课程中内力求解的改进设正法及其教学实践
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摘要
设正法是材料力学课程中求解内力的常用方法,传统设正法有值得商榷之处.研究提出了一种改进的设正法,并通过算例对其应用过程进行了介绍,同时分析了应用该方法教学时应注意的问题.教学实践表明,用改进设正法求解内力,可以有效降低出错率,提高学生内力分析的能力,增加学习材料力学课程的自信,可对后续相关课程的学习产生正迁移效应.在日常教学中,教师应对学生是否能真正灵活地应用该方法进行必要的监控.
Method of positive assumption is a conventional way to solving internal force in Mechanics of Materials, but traditional method of positive assumption is debatable. In this paper, an improved method of positive assumption has been presented, and the application process of this improved method is introduced by some examples, matters to be noted in teaching by this improved method are also analyzed. Teaching practice shows that using improved method of positive assumption to solve internal force, can effectively reduce the error rate, improve the students' ability to analyze the internal force, increase the confidence in Mechanics of Materials learning, and can produce positive transfer effect for subsequent rated courses learning. In the daily teaching, teachers should be fully aware of whether students can really use the method flexibly.
Method of positive assumption is a conventional way to solving internal force in Mechanics of Materials, but traditional method of positive assumption is debatable. In this paper, an improved method of positive assumption has been presented, and the application process of this improved method is introduced by some examples, matters to be noted in teaching by this improved method are also analyzed. Teaching practice shows that using improved method of positive assumption to solve internal force, can effectively reduce the error rate, improve the students' ability to analyze the internal force, increase the confidence in Mechanics of Materials learning, and can produce positive transfer effect for subsequent rated courses learning. In the daily teaching, teachers should be fully aware of whether students can really use the method flexibly.
引文
[1] 刘鸿文.材料力学Ⅰ [M].北京:高等教育出版社,2014.
[2] 李金权,王茂廷.内力设正法在《材料力学》课程中的应用 [J].大学教育,2014,17(3):164-165.
[3] 王转怀.工程力学课《轴向拉压变形内力》教学浅谈 [J].西北职教,2006(5):43.
[4] 彭细荣.基于创新项目的材料力学教学中能力培养探索 [J].教育教学论坛,2015(50):101-102.
[5] 隋允康,宇慧平,杜家政.材料力学 [M].北京:机械工业出版社,2014.
[6] 叶荣昌,强文江,郑磊,等.材料力学课程本科生综合素质及能力培养探索 [J].中国冶金教育,2015(3):35-36.
[7] 姚丽萍,马永昌,郑应彬.机械类材料力学课程教学改革的探索 [J].西南师范大学学报(自然科学版),2015,40(4):152-154.
[8] 严岩.材料科学前沿课程教学革新与探索 [J].西南师范大学学报(自然科学版),2016,41(5):231-233.
[2] 李金权,王茂廷.内力设正法在《材料力学》课程中的应用 [J].大学教育,2014,17(3):164-165.
[3] 王转怀.工程力学课《轴向拉压变形内力》教学浅谈 [J].西北职教,2006(5):43.
[4] 彭细荣.基于创新项目的材料力学教学中能力培养探索 [J].教育教学论坛,2015(50):101-102.
[5] 隋允康,宇慧平,杜家政.材料力学 [M].北京:机械工业出版社,2014.
[6] 叶荣昌,强文江,郑磊,等.材料力学课程本科生综合素质及能力培养探索 [J].中国冶金教育,2015(3):35-36.
[7] 姚丽萍,马永昌,郑应彬.机械类材料力学课程教学改革的探索 [J].西南师范大学学报(自然科学版),2015,40(4):152-154.
[8] 严岩.材料科学前沿课程教学革新与探索 [J].西南师范大学学报(自然科学版),2016,41(5):231-233.