ansys中实现预应力的几种方法（There are several ways to achieve prestress in ansys）.doc

ansys中实现预应力的几种方法（There are several ways to achieve prestress in ansys） It is well known that in ANSYS, the prestressed concrete analysis (with adhesion) can adopt the equivalent load method and the real strength method. The so-called equivalent load method is to apply the function of the force bar to the concrete structure in the form of load. The so-called real strength reinforcement method is to simulate concrete with solid solid, while link is simulated by the reinforcement. The advantages and disadvantages of the equivalent load method The advantage is that it is simple to model, without considering the specific position of the reinforcement, which can be directly modeled. The overall effect of structure under prestress is easy to obtain. The main disadvantages are: The method of equivalent load does not take into account the distribution and direction of the effect of the reinforcement on the concrete, and the effect of the reinforcement on the concrete is obviously different everywhere, the equivalent load law is not considered. The horizontal component is not considered. (2) to some linear force simulation difficulties, such as usually adopted is linear (short) + + curve lines (long) + + curve line (short), equivalent to trouble, this form of distributed and may not be reasonable. It is difficult to obtain the stress response of the structure, otherwise the load must be applied to the position of the reinforcement, which loses the convenience of modeling. The combined effect of the external load is difficult to consider, and cannot determine the stress increment under the external load. There is no simulation for the tensioning process. It is impossible to simulate the stress caused by stress loss. Its biggest drawback is: thicker! According to the netizen communication, the result is bigger than the actual situation! The difference between the result and the actual error is more (probably a special case), so the method needs to be careful and calibrated. The