Siemens Femap Nastran : Learn Engineering Simulations

Master the basics of finite element analysis (fea), including mesh generation with nodes, solving boundary value problems via partial differential equations, and the preprocessing–solver–post-processing workflow for stresses and displacement.

Explore definitions of stresses and strains, including direct and shear stress, Hooke's law, modulus of elasticity (Young's modulus), yield and ultimate strength, and Poisson's ratio for elastic and plastic materials.

Learn the von Mises stress concept and distortion energy theory to predict ductile material failure under combined stresses, using yield stress, factor of safety, and simple tensile comparisons.

Explore the fundamentals of linear static analysis, including linear force–displacement relations, time invariance, and quasi static assumptions, and relate stress, strain, and Hooke’s law to a tensile test.

Import and assemble a solid geometry in Siemens Femap Nastran, define material properties and solid elements, and set up automatic face-to-face contact with master-slave regions for a multi-component assembly.

Apply a surface load and constraint on the solid assembly, mesh the model, and run a static analysis to evaluate stresses and displacements.

Analyze a fixed-left bar with a 100×100 rectangular cross-section under a 100000 N end load, using Nastran to define material, geometry, and mesh for stress and deflection results.

Create a bar element in Femap Nastran, assign material and property, define two nodes and a vector, then apply a 100000 N axial force and fix the node.

Create a static bar analysis job in Femap Nastran, run the solve, and use the post-processing toolbox to view total translation, deformation, and actual stresses via contour plots and animation.

Analyze bending with a beam element of 500 length and 100 by 100 cross-section under 1000 N; compute stress via bending formula, noting moment, inertia I=12, deflection near 2.4 m.

Build a bending beam model in Femap Nastran, with a 100×100 cross-section, material Young's modulus 210000 and Poisson's ratio 0.3, apply downward load, and enforce a fixed boundary for analysis.

Verify beam bending results in FEMAP by viewing the deformed shape, animating run, and inspecting end stresses to confirm about 300 MPa and 2.4 mm deflection with a rectangular cross-section.

Analyze a simple truss cross member under a 350 kN vertical load, with fixed left support and horizontal right movement. Model with steel bar elements and consistent units.

Create a truss model by defining node coordinates in the xy plane, then define rectangular bar elements with a 0.25 by 0.25 cross-section and a 200 GPa material.

Learn to perform static truss analysis in Femap Nastran by applying a 350 N nodal load, defining roller and fixed supports, and analyzing results.

Post-process results to animate deformations and view forces and stresses in each cross member, distinguishing compression and tensile loads, and convert stress from the Leuchtenburg meter scale.

Explore mid-surface shell and plate elements in engineering simulations, including quadrilateral and triangular types, thickness extrusion from surfaces, and applications to automobile frames with improved efficiency and accuracy.

Import the plate geometry, extract its mid-surface, set five millimeter thickness, and apply a two-element model with a 10000 newton downward load on both sides and fixed opposite face.

Apply a vertical downward load and fixed boundary conditions to a plate, generate a surface mesh, run the analysis, and examine stress, deformation, and thickness in post-processing.

Discover the types of elements in Nastran, including bar, beam, quad eight, triangle six, and tetra elements. Explore higher-order and mid-side node options and special elements like mass and interface.

Explore meshing options in Femap, define material and solid properties, and create hex or tetra/penta meshes by setting mesh size, merging nodes, and viewing elements by type or shape.

Learn hex mesh generation for parts, including when auto mesh yields solid brick elements for simple geometries and why complex hollow parts require alternative meshing methods.

Learn hex mesh generation for a base link part by splitting complex geometry with embed face commands, applying hex match, and exploring manual matching using sweep and plot elements.

Select mesh size with mesh control on solid and face to generate a hex mesh for solid, then compare coarse, normal, and fine meshes to balance accuracy and run time.

Continue the meshing module by creating a 2d rectangle geometry, assigning a material property, and generating a mesh with specified element sizes, refinement, and editing options.

Learn to assign different material properties to different components by creating steel and aluminum isotropic materials, defining separate solid properties, and meshing with distinct property assignments for each part.

Perform a buckling analysis on a 5x5 beam using isotropic material, hex meshing, fixed bottom, and pressure loading; compare the first positive eigenvalue to the applied load to assess safety.

Explore the dynamic analysis, including vibration, how force, displacement, velocity, and acceleration vary with time, and contrast static versus dynamic behavior while outlining governing equations and natural frequency concepts.

Learn the basics of modal analysis in dynamic simulation, identify natural frequencies and deformation modes, and understand solving the eigenvalue problem with stiffness and mass matrices.

Import a neutral file geometry, set materials and constraints, run modal analysis to obtain natural frequencies and mode shapes, and perform a frequency response analysis to study resonance.

Learn how to perform frequency response analysis by defining a frequency-dependent load and damping, identify the first natural frequency, and visualize displacement vs time to assess resonance.

Contrast static and dynamic analysis in finite element software, noting linear and nonlinear behavior and dynamic categories like free and forced vibration with frequency, transient, spectrum, and complex eigenvalue analyses.