The circuit in problem sketch 1 is modeled to be a

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: are compared to the reference at the midspan. Results Comparison MX Twist in X-Direction ANSYS Ratio BEAM188 0.3293E-03 0.3326E-03 1.010 BEAM189 1–514 Target 0.3293E-03 0.3330E-03 1.011 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM222 Figure 222.3 Warping Torsion Bar Plot Figure 222.4 Warping Torsion Bar Plot ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–515 VM223: Frequency Response of a Prestressed Beam Overview Reference: R. D. Blevins, Formulas for Natural Frequency and Mode Shape, Van Nostrand Reinhold Co., New York, NY, 1979, pg. 144, eq. 8-20. Analysis Type(s): Static Analysis (ANTYPE = 0), Modal (ANTYPE = 2) Element Type(s): 2-D Elastic Beam Elements (BEAM3) Electromechanical Transducer Elements (TRANS126) Input Listing: vm223.dat Test Case A parallel-plate capacitor is attached to the end of a long slender beam. A DC voltage drop is applied across the capacitor, loading the beam in tension. Compute the natural frequency of the beam. Material Properties I = B X H3 / 12 Beam moment of inertia E = 169 X 103 µN / µm2 Modulus D = 2332 X 10-18 kg / µm3 Density ε0 = 8.85 X 10-6 pF / µm Free space permittivity Loading V = 150.162 volts Applied voltage to plate Geometric Properties L = 150 µm Beam length B = 4 µm Beam width H = 2...
View Full Document

Ask a homework question - tutors are online