Notice: The Ansys Innovation Space websites will be temporarily unavailable on Monday November 6 from 8:30 EDT to 1:00pm EDT for scheduled maintenance.
We apologize for any inconvenience this may cause and appreciate your understanding.
Structural Dynamics

Structural Dynamics

  1. All Categories
  2. Structures - Structural Dynamics
  3. How can I specify acceleration at a node? Could I use the ‘big mass method’?

How can I specify acceleration at a node? Could I use the ‘big mass method’?

Tagged: 7, apply acceleration at node, big mass method, Mechanical APDL (f. ANSYS), Modal/Harmonic Response, structural-dynamics, structural-mechanics
    • January 25, 2023 at 7:34 am
      FAQFAQ
      Participant

      Yes, it could be done by the ‘big mass method.’ A demonstration of the big mass method is given below. The final plot in the time-history postprocessor shows that a unit acceleration time history has been produced at the beam support location. /prep7 et,1,4 r,1,.1,.01,.01,.05,.05 mp,ex,1,1e7 mp,dens,1,.00025 n,1 n,11,50 fill e,1,2 *repeat,10,1,1 et,2,21 r,2,,1250 ! big mass in y direction only type,2 real,2 e,1 d,1,all ddele,1,uy ! constrain all but y direction fini /solu antype,trans omega=100 ! 100 radians/sec *do,tval,.001,.1,.001 f,1,fy,1250*sin(omega*tval) ! to produce a(y) = 1*sin(wt) time,tval solve *enddo fini /post26 nsol,2,1,uy deriv,3,2,1 deriv,4,3,1 plva,4 ! verify s

Featured Articles

Introducing Ansys Electronics Desktop on Ansys Cloud

The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...

How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)

This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...

Introducing the GEKO Turbulence Model in Ansys Fluent

The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...

Postprocessing on Ansys EnSight

This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.

© 2024 Copyright ANSYS, Inc. All rights reserved.