Engineering Mechanics drawing method of internal force.doc

Engineering Mechanics drawing method of internal force [Abstract] grasp the internal force mapping method is to learn the basic and key civil engineering mechanics, civil engineering mechanics according to the initial force of teaching practice, the most common civil engineering mechanics were discussed several internal force diagrams to help students more a good grasp and draw the internal force diagrams, to enhance students analyze and solve problems. [Keywords:] Mutation of Civil Engineering and Mechanics internal force diagrams Civil Engineering Civil Engineering mechanics is an important theoretical and experimental basis, it is to study the structure and components safely withstand a variety of roles (such as a course load. This course studies the structure and components of the strength, rigidity and stability and other issues from the not open force analysis, force analysis is the most important civil mechanical link, and most of the cross section bar reflects undoubtedly the distribution of internal force diagram, the internal force diagram with strong expression of the intuitive, easy to make, so internal force diagrams become member forces an important means of expression. author based on many years of teaching practice, the most common civil engineering mechanics to make a map of some internal force. Internal force diagram is drawn out material force balance equation of internal force diagram drawn by the equation, and the new method is to promote the use of internal forces of law and the load map of “mutation”, directly draw internal force diagrams, quick and easy to draw the initial force is the right key. An axial tension (bar graph of internal forces - axial force (FN map Axial tension (the force bar features: the role of external forces the axis line and the rod overlap. Axial tension (strut shaft trying - FN (x axis of the image directly reflect the relationship between force and cross section locations, representing intu