搜搜做题作业网急~~! 建筑英语翻译 求大侠翻译
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急~~! 建筑英语翻译 求大侠翻译
one of the main problems of mechanics of materials is the investigation of the internal resistance of abody,that is ,the nature of forces set up within a body to balance the effect of the externally applied forces.for this purpose,a uniform method of approach is employed.a complete diagrammatic sketch of the member to be investigated is prepared,on which all of the external forces acting on a body are shown at their respective points of application.such a sketch is called a free-body diagram.all forces acting on a body,including the reactive forces caused by the supports and the weight of the body itself,are considered external forces.moreover,since a stable body at rest is in equilibrum,the forces acting on it satisfy the equations of static equilibrium.thus,if the forces acting on a body such as shown fig 3-2 satisfy the equations of static equilibrium and are all shown acting on it,the sketch represents a freebody diagram.next,sinace a determination of the internal forxes caused by the external ones is one of the principal concerns of this subject ,an arbitrary section is passed through the body ,completely separating it into tow parts.the result of such a process can be seen in fig3-2 and where an arbitrary plane ABCD separates the original solid solid body of fig3-2 into tow distinct parts.this process will be referred to as themethod of sections.then,if the body as a whole is in equilibrium,any part of it must also be in equilibrium.for such parts of a body,however,some of the forces necessary to maintain equilibrium must act at the cut section.these considerations lead to the following fundamental conclusion.
one of the main problems of mechanics of materials is the investigation of the internal resistance of abody,that is ,the nature of forces set up within a body to balance the effect of the externally applied forces.for this purpose,a uniform method of approach is employed.a complete diagrammatic sketch of the member to be investigated is prepared,on which all of the external forces acting on a body are shown at their respective points of application.such a sketch is called a free-body diagram.all forces acting on a body,including the reactive forces caused by the supports and the weight of the body itself,are considered external forces.moreover,since a stable body at rest is in equilibrum,the forces acting on it satisfy the equations of static equilibrium.thus,if the forces acting on a body such as shown fig 3-2 satisfy the equations of static equilibrium and are all shown acting on it,the sketch represents a freebody diagram.next,sinace a determination of the internal forxes caused by the external ones is one of the principal concerns of this subject ,an arbitrary section is passed through the body ,completely separating it into tow parts.the result of such a process can be seen in fig3-2 and where an arbitrary plane ABCD separates the original solid solid body of fig3-2 into tow distinct parts.this process will be referred to as themethod of sections.then,if the body as a whole is in equilibrium,any part of it must also be in equilibrium.for such parts of a body,however,some of the forces necessary to maintain equilibrium must act at the cut section.these considerations lead to the following fundamental conclusion.
其中最主要的材料的力学问题的调查一体的内部电阻,建立了自然的力量平衡身体内的外部应用的效果forces.for这个目的,方法是提供一个一致的方法employed.a完整的拟草图研究成员在做足了准备工作,所有的外力作用于一体的显示application.such以各自的点一份被称为free-body diagram.all有力作用在身体,即利用活性力量的支持和造成的身体本身的重量,被认为是外部力量.
此外,由于一个稳定的静止的物体在equilibrum,有力作用在它上面,满足方程的equilibrium.thus,如果力量静态的受力显示图等身体3:2满足静力平衡方程都是显示作用在它上面,、素描代表了一个freebody sinace下定决心,diagram.next内部forxes外在因素造成的主要关注这一主题,任意部分通过身体,完全分离成两个相互关联的这样一个过程的结果中可以看出,在fig3-2任意平面ABCD分离原塌实实的身体parts.this fig3-2分成两不同过程被称为themethod sections.then的,假如身体作为一个整体,是均衡,它的任何部分也必须在equilibrium.for这样的部分的身体,特别是一些部队不得不保持平衡必须行动在伤口section.these考虑导致以下基本结论.
此外,由于一个稳定的静止的物体在equilibrum,有力作用在它上面,满足方程的equilibrium.thus,如果力量静态的受力显示图等身体3:2满足静力平衡方程都是显示作用在它上面,、素描代表了一个freebody sinace下定决心,diagram.next内部forxes外在因素造成的主要关注这一主题,任意部分通过身体,完全分离成两个相互关联的这样一个过程的结果中可以看出,在fig3-2任意平面ABCD分离原塌实实的身体parts.this fig3-2分成两不同过程被称为themethod sections.then的,假如身体作为一个整体,是均衡,它的任何部分也必须在equilibrium.for这样的部分的身体,特别是一些部队不得不保持平衡必须行动在伤口section.these考虑导致以下基本结论.