12 research outputs found
VERGLEICH DES NEO-HOOKE´SCHEN UND DES MOONEY-RIVLIN´SCHEN MATERIALMODELLS IN DER FEM-BERECHNUNG
This paper presents the application of two material models,
Mooney-Rivlin, and Neo-Hooke in FEM, to calculate better results, nearer to the facts. The exact
definition of the
material properties is an important step in the finite element analysis.
Silicone rubber
belongs to non-linear incompressible elastic materials, which have large deformability.
This material behaviour can be described by the application of the strain energy potential. Of
course, there are more types of elastic potentials, but the Mooney-Rivlin
method is widely used
for rubber-like materials. This Mooney-Rivlin formula is also used by the Marc/Mentat
FEM program
Nagyrugalmasságú anyagokból készült szenzorok és pneumatikus/hidraulikus működtetésű aktuátorok = Hydraulic actuators made from high elasticity material for mechanical engineering and for the medicine
A nagyrugalmasságĂş szerkezetekben alkalmazhatĂł szilikon gumi tĂpusok mechanikai, dinamikai, villamos, optikai tulajdonságainak rendszerezĹ‘, Ă©s Ă©lettartam vizsgálatait vĂ©geztĂĽk el. Kimutattuk, hogy mely anyagtĂpusoknál helyettesĂthetĹ‘k a nagy tisztaságĂş, drága orvosi szilikonok olcsĂłbb ipari tĂpusokkal. Megmutattuk, hogy a prototĂpus gyártás terĂĽletĂ©n szokásos kĂ©t technolĂłgiával előállĂtott szilikon gumi fontos mechanikai tulajdonságai között nincs meghatározĂł kĂĽlönbsĂ©g. Az Ăşj, pneumatikus aktuátoros, digitális vezĂ©rlĂ©sű, testĂĽreg-szonda ipari Ă©s orvosi alkalmazásra alkalmas. A gyĂłgyászat terĂĽletĂ©n nagy a mestersĂ©ges sphincter (bĂ©lelzárĂł) bionikai prototĂpusa, amely alapvetĹ‘en eltĂ©r az ismert megoldástĂłl. Az alakoptimalizálás fázisában van a minimál-invazĂv sebĂ©szethez nĂ©lkĂĽlözhetetlen vĂ©dĹ‘csĹ‘ Ă©s aktuátor. Igazoltuk a nagytisztaságĂş optikai szilikon kettĹ‘störĹ‘ tulajdonságát, Ă©s elsĹ‘kĂ©nt alkalmaztuk az effektust erĹ‘mĂ©rĹ‘ben. A vezetĹ‘ szilikon gumi szenzor nagyrugalmasságĂş anyagokbĂłl kĂ©szĂĽlt, Ă©s iparban alkalmazott szerkezetekhez valĂł integrálhatĂłságát vizsgáltuk eredmĂ©nyesen. ModellkĂsĂ©rleteink szerint a szenzor versenylovak minimál-invazĂv mozgásanalĂzisĂ©re is alkalmas. Kidolgoztuk a mágnesek szilikonnal valĂł bevonását bĂ©lfalakon átvezetĹ‘ nyĂlások lĂ©trehozására varratkĂ©szĂtĂ©s nĂ©lkĂĽl, a mĂłdszer jelenleg állatkĂsĂ©rleti fázisban van. ElkĂ©szĂĽlt a kĂ©zsebĂ©szeti az Ăn-pĂłtlás cĂ©ljára kifejlesztett szilikon eszköz. KĂ©szĂĽlt Ăşjszerű nyelĹ‘csĹ‘ stent is. MűtĂ©ti segĂ©deszközöket kĂ©szĂtettĂĽnk Ă©s fejlesztĂĽnk folyamatosan, a legĂşjabb sebĂ©szeti technikához (NOTES). | Mechanical, dynamical, electric and optic properties and the durability of diverse silicone rubber types applicable in high elastic systems have been investigated and compared. We showed which types of expensive medical rubbers can be substituted by industrial types. We showed that no significant differences of the mechanical properties exist between products manufactured with the two typical prototype technologies. The new type pneumatic controlled intestinal robot is usable in the medicine and in the industry as well. The prototype of the new bionic based artificial sphincter is important for the medicine. The ?overtube? with special actuator is necessary for the minimal invasive surgery. We verified the existence of the double diffraction of the pure optical silicone rubber and used this effect in force transducer. The integration of conductive silicone rubber on high elasticity industrial structures was showed. Our model experiments show that this sensor can be used successfully for the movement analysis of race horses. We developed the technology of silicone rubber covering of permanent magnets used in minimal intensive surgery for the creation of gastro-entero anastomosis. A new type of artificial tendon for the acute hand surgery and a special oesophag (gullet) stent were developed. New high flexible instruments and helps were created for the use in the newest minimal intensive surgery named NOTES