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Example: DXF import and analysis types

Example: DXF import and analysis types. Analysis of a component. Analysis of a mechanical component. Plane stress DXF import of geometry Linear static analysis Eigenfrequency analysis Frequency response analysis Dynamic analysis. Analysis of a component – Linear static analysis.

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Example: DXF import and analysis types

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  1. Example:DXF import and analysis types

  2. Analysis of a component Analysis of a mechanical component • Plane stress • DXF import of geometry • Linear static analysis • Eigenfrequency analysis • Frequency response analysis • Dynamic analysis

  3. Analysis of a component – Linear static analysis Linear static analysis • Structural Mechanics Module - Plane stress - Stationary (In Model Navigator) • Insert from file -DXF file “component_geometry.dxf” (file menu) • Coerce to solid (draw menu or Coerce to solid button) • Split object (draw menu or Split object button) • Remove holes (Create composite object from draw menu or difference button) • Specify material in subdomain settings dialog on material page • Add/Edit Material ... • Select Structural steel and press add • Check Use defined material • Specify thickness to 4e-3 m • Specify loads and constraints on boundaries • Fix left edge in x and y direction • Specify load on right edge, Fx=60e3 • Plot symbols • Check mesh • Solve • Look at result, deformation, stress Material data: Structural steel thickness = 4E-3 m Fx=60e3 N/m Fx

  4. Analysis of a component - Results Result linear static analysis

  5. Analysis of a component – Eigenfrequency analysis Eigenfrequency analysis • Specify eigenfrequency analysis • Solve menu - Parameters … - General Page - Solver type - Eigenfrequency • Solve • Look at result, eigenfrequencies, mode shapes

  6. Analysis of a component - Results Result eigenfrequency analysis

  7. Analysis of a component – Frequency response Frequency response analysis • Harmonic load in frequency range 200-600 Hz • Specify frequency response analysis • Using preferred submodes • Solve menu - Parameters - General page - Solver type - Parametric • Specify excitation frequencies • Solve menu - Parameters - Parametric page • Name of parameter: exfreq • List of parameter values: 200:10:600 • Specify excitation angular frequency • Options - Applications Scalar Variables … • omega = 2*pi*exfreq • Specify damping coefficients alfa and beta on Material page • alfadM=1.89e2, betadK=3.98e-5 • Solve • Look at x-disp(f) at bottom right corner • Post menu - Cross-Section Plot Parameters … • Press point mode • Select all parameters values on the General page • Select point • Select x-displacement amplitude (u_amp) as point expression • Select vertex 27 from list or click on model

  8. Analysis of a component - Results Resultx-disp amplitude vertex 27

  9. Analysis of a component – Dynamic analysis Dynamic analysis • Transient load f=500 Hz solve for 2 periods • Change load to • Fx=60e3*sin(2*pi*500*t) • Specify time dependent analysis • Solve menu - Parameters - General page - Solver type - Time dependent • Timeinterval • Timestepping page • Output times 0 4e-3 • Solve • Look at result • Cross section plot, compare x-disp. at vertex 27 with frequency response analysis

  10. Analysis of a component - Results Resultx-displacement vertex 27

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