Bài tập SBVL2 CSU - Energy Method (1 đến 5)

• Đăng bởi: lethithanhbinh
• Sinh viên
• 18/03/2018

Energy Method 1:

Using E = 200GPa, determine (a) the strain energy of the steel rod ABC when P = 25kN, (b) the corresponding strain-energy density in portions AB and BC of the rod (Picture 1).

Energy Method 2:

Rod AB is made of a steel for which the yield strength is s_y = 450MPa and E = 200GPa; rod BC is made of an aluminum alloy for which s_y = 280MPa and E = 73GPa. Determine the maximum strain energy that can be acquired by the composite rod ABC without causing any permanent deformations (Picture 2).

Energy Method 3:

The assembly ABC is made of a steel for which E = 200GPa and s_y = 320MPa. Knowing that a strain energy of 5 J must be acquired by the assembly as the axial load P is applied, determine the factor of safety with respect to permanent deformation when (a) x = 300mm, (b) x = 600mm (Picture 3) .

Energy Method 4:

In the truss shown, all members are made of the same material and have the uniform cross-sectional area indicated. Determine the strain energy of the truss when the load P is applied (Picture 4).

Energy Method 5:

Each member of the truss shown is made of aluminum and has the cross-sectional area shown. Using E = 72GPa, determine the strain energy of the truss for the loading shown (Picture 5) .