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所在平台: Udemy |
课程主页: https://www.udemy.com/course/strength-of-materials-part-i/
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课程名称：材料的强度-第一部分 课程概述：该课程是材料强度主题讲座系列的第一部分，涵盖了多个主题，例如应力与应变、剪力图（SFD）和弯矩图（BMD）。通过解决各种实例来解释各个概念及其应用。理解本课程需要具备基本的数学和固体力学知识。课程开始于单位制的历史介绍，学习包括英尺-磅-秒（F.P.S）、米-千克-秒（M.K.S）和厘米-克-秒（C.G.S）制及其之间的换算，并解释了单位制在工程中的重要性。 接下来，我们探讨应力和应变的概念，主题包括应力和应变的类型、长度变化的推导、韧性材料和脆性材料的应力应变关系、锥形杆的伸长、由于自重引起的杆伸长、复合棒和复合材料中的应力和应变、温度应力与应变、应变概念、泊松比、单轴-双轴-三轴加载、弹性常数及所有这些主题的数值题。 最后，我们研究剪力图（SFD）和弯矩图（BMD），讨论支撑类型、梁、反应、剪力和弯矩的符号约定及相关数值题。课程结束时提供测试以供练习，以帮助学员在处理日常问题时获得专业知识和技能。
This course is the first part of the lecture series of Strength of Materials subject. It takes you through various topics like Stresses & Strains, Shear Force Diagram(SFD) & Bending Moment Diagram(BMD). Various numerical are solved to explain various concepts and their applications. Basic Mathematics and Solid Mechanics are the requirement for understanding of this subject.We start with introduction to history of Unit Systems wherein we study about Foot-Pound-Second(F.P.S), Meter-Kilogram-Second(M.K.S) and Centimeter-Gram-Second(C.G.S) systems. Their interconversions is also explained along with the importance of unit system in engineering.Further, we move to the concept of Stresses and Strains where topics like types of stresses and strains, derivation for change in length, stress-strain for ductile and brittle materials, elongation of tapered bar, elongation of bar due to self-weight, stress and strain in composite and compound bars, temperature stresses and strains, concept of strain, Poisson's Ratio, uniaxial-biaxial-triaxial loading, elastic constants- and numericals on all these topics.Lastly we study about Shear Force Diagram(SFD) and Bending Moment Diagram(BMD). Topics like types of supports, beams, reactions, Shear Force and Bending Moment sign conventions and numericals are discussed in it.Test is given at the end of course for practice so that expertise can be gained in dealing with day-to-day problems.
