土木工程外文翻譯(外文)框架-在線瀏覽
2024-08-06 16:32本頁(yè)面
【正文】 ress: in this case. due to its location in the beam. the particle is subjected to a bination of shear and linear pression stresses. An exaggerated profile of a loaddeformed structure helps establish the qualitative nature of the relationships between force actions and shape changes. Indeed. you can infer the form deformation from the type of force or stress. and vice versa. FIGURE Freebody diagrams.For example. Figure shows {he exaggerated deformation of the bent in Figure under wind loading. Note how you can deter mine the nature of bending action in each member of the frame from this figure. Figure shows the nature of deformation of in dividual particles under various types of stress. FIGURE Structural deformationThe scaled plot is a graph of some mathematical relationship or real data. For example, the graph in Figure represents the form of a damped ibration of an elastic spring. It consists of the plot of the displacements against elapsed time t. and represents the graph of the expression.FIGURE Graphical plot of a damped cyclic motion.Although the equation is technically sufficient to describe the phenomenon, the graph illustrates many aspects of the relation ship. such as the rate of decay of the displacement. the interval of the vibration. the specific position at some specific elapsed time. and so on.. METHODS OF INVESTIGATION AND DESIGN Traditional structural design centered on the working stress method. a method now referred to as stress design or allowable stress design (ASD). This method. which relies on the classic theories of elastic behavior, measures a design39。s response to service loadsthat is. the loads caused by normal usage conditions. The strength me/hod, mean while, measures a design39。s respons
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