CAS - Computerized Analysis & Simulation Ltd

Artery Branching Stent Simulation

Development of Artery Branching Stent concentrated on the branching flare.

A stent for artery branching was developed. The stent is assembled from 2 parts, one on the main artery and the second for the branch.The simulation was done on the branch artery part.

The stent was made from stainless steel 316 and the problem was focused on the flaring part of the stent. The task was designing the flare part that will require minimum force during opening and fixing and yet strong enough to withstand the artery loads. During expanding, the stent experience very high plastic phenomenon.The analysis included the crimping expanding processes and artery loads.
High strain is developed on the stent although the expansion is done with ferly low pressure suitable for medical balloon.

The analysis revealed the weaknesses spots and let the customer to develop a safer and better branching stent.

CAS can give you the benefit to develop a better and safer product in the deep non-linear processes.

a Composite material avionic seat optimization

An avionic seat was design in order to reduce it weight, to meet new costumer specification.

At avionic systems, airplanes, helicopters ect.. the weight issues are dramatically important, especially in commercial airplane were every small part at the passenger compartment is multiply by the passengers number.
This is the case shown here the target is to reduce the seat base weight of an airplane, but in the same time to keep its mechanical properties. The seat has some mechanical constrain due to the concoction to the seat system, as well as mechanical size dimension at some locations.
A composite material optimization was done, in order to keep the above demands, the composite material direction (0°, 45°, 90°) as well as thickness and geometrical shape were part of the parameters.

At the final stage a reduction of about 20% at the weight was achieved.