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- 18/3/10
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đọc đoạn này e ko hiểu ý của tác giả.mong sự giúp đỡ của cả nhà:
[FONT="]Prescribed displacements and prescribed forced. In principle, all boundaries must have one boundary condition in each direction. That is to say, when no explicit boundary condition is given to a certain boundary, the natural condition applies, which is prescribed force equal to zero and free displacement[/FONT]
[FONT="]In order to avoid the situation where the displacements of the geometry are undetermined, some points of the geometry must have prescribed displacements. The simplest form of a prescribed displacement is a fixity, but non-zero prescribed displacements may also be given. In this problem the settlement of the rigid footing is simulated by means of non-zero prescribed displacements at the top of the sand layer.[/FONT]
vấn đề chỗ này e ko hiểu cái "Prescribed displacements and prescribed forced" nghĩa là gì và nói chung là nghĩa đoạn này e ko hiểu lắm. đoạn này nằm trong phần "BOUNDARY CONDITION"
[FONT="]Prescribed displacements and prescribed forced. In principle, all boundaries must have one boundary condition in each direction. That is to say, when no explicit boundary condition is given to a certain boundary, the natural condition applies, which is prescribed force equal to zero and free displacement[/FONT]
[FONT="]In order to avoid the situation where the displacements of the geometry are undetermined, some points of the geometry must have prescribed displacements. The simplest form of a prescribed displacement is a fixity, but non-zero prescribed displacements may also be given. In this problem the settlement of the rigid footing is simulated by means of non-zero prescribed displacements at the top of the sand layer.[/FONT]
vấn đề chỗ này e ko hiểu cái "Prescribed displacements and prescribed forced" nghĩa là gì và nói chung là nghĩa đoạn này e ko hiểu lắm. đoạn này nằm trong phần "BOUNDARY CONDITION"