VM-WB-MECH-095

VM-WB-MECH-095
2-D Double Cantilever Beam Problem

Overview

Reference:	Madell, J. F., et al. (2003). Prediction of delamination in tind turbine blade structural details. Journal of Solar Energy Engineering, 522-530.
Solver(s):	Ansys Mechanical
Analysis Type(s):	Static Structural
Element Type(s):	2-D Structural Elements

Test Case

A double cantilever beam is modeled with composite material. One end of the beam is fixed, and the other end is loaded with two external forces of the same magnitude of the same magnitude but opposite directions as shown in the problem schematic. G computation for the cracked tip is conducted for VCCT using a pre-meshed crack object and compared with Equation 1 in the reference.

Figure 127: Problem Schematic

Material Properties

Geometric Properties

E = 210 GPa

= 0.3

L = 100

a = 60 mm

h = 5 mm

b = 1 mm

P = 10 N

Analysis Assumptions and Modeling Notes

The problem is solved using 2-D element with plain strain element behavior. A pre-meshed crack object is defined. The plate is subjected to vertical loading the middle. G values are computed for the crack tip node.

Results Comparison

Result	Target	Mechanical	Error (%)
G	0.2018	0.19273	-4.495