材料力学简介(英文)PPT课件
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The Introduction of Mechanics of Materials
陈继乐
.
1. The research object of Mechanics of Materials 2. The task of Mechanics of Materials and its relation
• Structure members • Classification of structure members:
plate or shell
bar or rod
clump body
.
2.The task of Mechanics of Materials and its relation with engineering
component or an element. .
The tasks of mechanics of materials
Under the request that the strength, rigidity, stability are satisfied, offer the necessary theoretical foundation and calculation method for determining reasonable shapes and dimensions, choosing proper materials for the components at the most economic price.
.
3.The properties and the fundmental assumptions of the solid deformable bodies
1.Continuity:The material of a solid deformable body is continuously distributed over its volume so that there are not any cracks, defects or holes etc . 2.Homogeneity:The material of the solid deformable body is homogeneously distributed over its volume. 3.Isotropy:The mechanical properties are the same in all directions at a point.
.
4.Small deformations: The deformations for a solid deformable caused by external forces are very small compared with the dimensions of the body. Thus when we study the equilibrium and motion 百度文库f the solid deformable body, the deformation of the body may be neglected.
with engineering 3. The properties and the fundmental assumptions of
the solid deformable bodies 4. Basic types of the deformation of rods
.
1.The research object of Mechanics of Materials
• Strength , Rigidity, Stability Strength: Capacity to resist failure of a component or an element. Rigidity: Capacity to resist deformations of a component or an element. Stability: Capacity to remain the original state in equilibrium of a
.
4.Basic types of the deformation of rods
1.Axial tension
2.Shear
.
3.Torsion
4.Bending
.
Thank You!
.
感谢亲观看此幻灯片，此课件部分内容来源于网络， 如有侵权请及时联系我们删除，谢谢配合！
陈继乐
.
1. The research object of Mechanics of Materials 2. The task of Mechanics of Materials and its relation
• Structure members • Classification of structure members:
plate or shell
bar or rod
clump body
.
2.The task of Mechanics of Materials and its relation with engineering
component or an element. .
The tasks of mechanics of materials
Under the request that the strength, rigidity, stability are satisfied, offer the necessary theoretical foundation and calculation method for determining reasonable shapes and dimensions, choosing proper materials for the components at the most economic price.
.
3.The properties and the fundmental assumptions of the solid deformable bodies
1.Continuity:The material of a solid deformable body is continuously distributed over its volume so that there are not any cracks, defects or holes etc . 2.Homogeneity:The material of the solid deformable body is homogeneously distributed over its volume. 3.Isotropy:The mechanical properties are the same in all directions at a point.
.
4.Small deformations: The deformations for a solid deformable caused by external forces are very small compared with the dimensions of the body. Thus when we study the equilibrium and motion 百度文库f the solid deformable body, the deformation of the body may be neglected.
with engineering 3. The properties and the fundmental assumptions of
the solid deformable bodies 4. Basic types of the deformation of rods
.
1.The research object of Mechanics of Materials
• Strength , Rigidity, Stability Strength: Capacity to resist failure of a component or an element. Rigidity: Capacity to resist deformations of a component or an element. Stability: Capacity to remain the original state in equilibrium of a
.
4.Basic types of the deformation of rods
1.Axial tension
2.Shear
.
3.Torsion
4.Bending
.
Thank You!
.
感谢亲观看此幻灯片，此课件部分内容来源于网络， 如有侵权请及时联系我们删除，谢谢配合！