. Xác định điều kiện tải, do đó, một bước quan trọng trong phân tích. Bạn có thể áp dụng nhiều vào mô hình trong nhiều cách khác nhau trong các chương trình ANSYS. Với sự giúp đỡ của các tùy chọn bước tải, bạn có thể kiểm soát như thế nào tải thực tế sử dụng trong quá trình giải pháp. Các chủ đề tải sau đây | Chapter 2 Loading The primary objective of a finite element analysis is to examine how a structure or component responds to certain loading conditions. Specifying the proper loading conditions is therefore a key step in the analysis. You can apply loads on the model in a variety of ways in the ANSYS program. With the help of load step options you can control how the loads are actually used during solution. The following loading topics are available . What Are Loads . Load Steps Substeps and Equilibrium Iterations . The Role of Time in Tracking . Stepped Versus Ramped Loads . Applying Loads . Specifying Load Step Options . Creating Multiple Load Step Files . Defining Pretension in a Joint Fastener . What Are Loads The word loads in ANSYS terminology includes boundary conditions and externally or internally applied forcing functions as illustrated in Figure Loads p. 21 . Examples of loads in different disciplines are Structural displacements velocities accelerations forces pressures temperatures for thermal strain gravity Thermal temperatures heat flow rates convections internal heat generation infinite surface Magnetic magnetic potentials magnetic flux magnetic current segments source current density infinite surface Electric electric potentials voltage electric current electric charges charge densities infinite surface Fluid velocities pressures Figure Loads Boundary conditions as well as other types of loading are shown. Release - 2009SAS IP Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS Inc. and its subsidiaries and affiliates. 21 Chapter 2 Loading Loads are divided into six categories DOF constraints forces concentrated loads surface loads body loads inertia loads and coupled-field loads. A DOF constraint fixes a degree of freedom DOF to a known value. Examples of constraints are specified displacements and symmetry boundary conditions in a structural analysis prescribed temperatures
