TY  - EJOU
AU  - Kriegesmann, B.  
AU  - Rolfes, R.  
AU  - Jansen, E. L.  
AU  - Elishakoff, I.  
AU  - Hühne, C. 
AU  - Kling, A.  

TI  - Design Optimization of Composite Cylindrical Shells under Uncertainty
T2  - Computers, Materials \& Continua

PY  - 2012
VL  - 32
IS  - 3
SN  - 1546-2226

AB  - Four different approaches for the design of axially compressed cylindrical shells are presented, namely (1) the knockdown factor (KDF) concept, (2) the single perturbation load approach, (3) a probabilistic design procedure and (4) the convex anti-optimization approach. The different design approaches take the imperfection sensitivity and the scatter of input parameters into account differently. In this paper, the design of a composite cylinder is optimized considering the ply angles as design variables. The KDF concept provides a very conservative design load and in addition an imperfection sensitive design, whereas the other approaches lead to a significantly less conservative design load and to a less imperfection sensitive design configuration. The ways in which imperfection sensitivity is treated by the different approaches and how these influence the optimal design configuration is discussed.
KW  - buckling
KW  -  cylindrical shells
KW  -  design optimization
KW  -  composites

DO  - 10.3970/cmc.2012.032.177