Overview

www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS Workbench

Test Case

www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS Workbench

Long bar 20m x 2m x 2m is immersed in a fluid and is fixed at one end. Fluid density is 1000 kg/m³ and Hydrostatic acceleration is 10 m/s² in negative Z direction. Hydrostatic pressure is applied on a longitudinal face normal to X-axis at different locations as given in the scenarios below. Find normal stress in Z direction of square bar.

Scenario 1: Square bar is partially immersed in the fluid up to 15 m in Z direction from the fixed support.

Scenario 2: Square bar is fully immersed in the fluid up to 25 m in Z direction from the fixed support

Analysis

www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS Workbench

Scenario 1: Partialy Submerged (Pressure distribution in triangular form)

Pressure distribution on square bar in triangular form, one end is maximum and other end is zero

Pressure on square bar = P = ρ x g x h

Load per meter is w = P x L

Maximum bending moment =

Normal stress = Bending stress = Maximum bending moment / Sectional Modulus

Scenario 2: Fully Submerged (Pressure distribution in trapezoidal form)

Maximum bending moment =

where:

W1 = Maximum Load per meter (@ 25m)

W2 = Minimum Load per meter (@ 5m)

Normal stress = Bending stress = Maximum bending moment / Sectional Modulus

Results Comparison

www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS Workbench