The perturbation sensitivity and its influence on the limit loads of shells are widely discussed phenomena. Both phenomena may be classified with respect to the type of perturbation. As perturbations influence the stability of shells, the identification of unfavourable perturbations is essential. The perturbation energy concept enables to identify unfavourable non-initial perturbation loads and...

-In present days, automobile industries are rapidly increased. All the automobile industries are in the process of supplying the vehicles at low cost. The major cost of the automobile components is its body parts. As per the European Union and Asian countries automotive components end life is very important factor in the design of the automotive. So everybody is concentrating on new materials w...

Solid residues from agroindustry often accumulate and cause environmental imbalance. An alternative to this is use residue as a reinforcement in polymers. The achievement of work was characterize composite with polystyrene matrix reinforced Brazil nut shells residues. were cleaned ground then produce the samples via injection molding proportions 0%, 2.5% 5% load. specimens characterized using m...