SS-V: 8010 Wrapped Thick Cylinder under Pressure and Thermal Loading

Test No. VC02This NAFEMS composite benchmark involves a long, thick cylinder composed of isotropic material, reinforced with external hoop windings made from orthotropic composite material. The benchmark evaluates the capability to accurately model pressure and thermal loading in laminated composite structures.

Definition

Figure 1.


The material properties are:
Properties
Value
Inner cylinder (Isotropic material)
E=2.1x106 MPa, v =0.3, α =2.0x10-5℃
Outer cylinder (Orthotropic material)
E x =1.3x105 MPa, v x y =0.25, G x y 1.0x104 MPa, α x =3.0x10-6/℃
E y =5.0x103 MPa, v x z =0.25, G x z =1.0x104 MPa, α y =2.0x10-5/℃
E z =5.0x103 MPa, v y z =0, G y z =5x103 MPa, α z =2.0x10-5/℃

Results

Case 1: Internal pressure of 200 MPa.

Case 2: Internal pressure of 200 MPa combined with a temperature increase of 130℃. The thermal loading simulates the pre-stress induced by tension in the hoop windings.
Table 1.
Hoop Stress (MPa) NAFEMS SimSolid % Difference
Case 1 at radius = 24 mm 1483 1462 1
at radius = 26 mm 822 815 <1
Case 2 at radius = 24 mm 1309 1285 2
at radius = 26 mm 994 998 <1
1 Test R0031/2 from NAFEMS publication R0031, Composites Benchmarks, February 1995