The dynamic buckling problem of elastic bars subjected to axial impact has been investigated by many authors in different ways.In this paper the problem,in which the elastic bars are assumed to be ideally straight,is ...The dynamic buckling problem of elastic bars subjected to axial impact has been investigated by many authors in different ways.In this paper the problem,in which the elastic bars are assumed to be ideally straight,is reformulated in connection with the bifurcation due to the stress wave propagation.The example of a semi-infinite elastic bar is used for illustration.展开更多
Based on the nonlinear geometric theory of extensible rods, an exact mathematical model of thermal post_buckling behavior of uniformly heated elastic rods with axially immovable ends is developed, in which the arc len...Based on the nonlinear geometric theory of extensible rods, an exact mathematical model of thermal post_buckling behavior of uniformly heated elastic rods with axially immovable ends is developed, in which the arc length s(x) of axial line and the longitudinal displacement u(x) are taken as the basic unknown functions. This is a two point boundary value problem of first order ordinary differential equations with strong non_linearity. By using shooting method and analytical continuation, the nonlinear boundary value problems are numerically solved. The thermal post_buckled states of the rods with transversely simply supported and clamped ends are obtained respectively and the corresponding numerical data tables and characteristic curves are also given.展开更多
文摘The dynamic buckling problem of elastic bars subjected to axial impact has been investigated by many authors in different ways.In this paper the problem,in which the elastic bars are assumed to be ideally straight,is reformulated in connection with the bifurcation due to the stress wave propagation.The example of a semi-infinite elastic bar is used for illustration.
文摘Based on the nonlinear geometric theory of extensible rods, an exact mathematical model of thermal post_buckling behavior of uniformly heated elastic rods with axially immovable ends is developed, in which the arc length s(x) of axial line and the longitudinal displacement u(x) are taken as the basic unknown functions. This is a two point boundary value problem of first order ordinary differential equations with strong non_linearity. By using shooting method and analytical continuation, the nonlinear boundary value problems are numerically solved. The thermal post_buckled states of the rods with transversely simply supported and clamped ends are obtained respectively and the corresponding numerical data tables and characteristic curves are also given.
