This paper presents the results of research aimed at verifying effectiveness six selected models elastomeric materials in which constants were determined based on uniaxial tension test.The (Neo-Hookean, Mooney with two and three constants, Signorini, Yeoh, Ogden) was a comparison between obtained experimental upsetting an cylinder numerical FEM calculations for each model.Cyclic testing elastomer samples employed to determine stress-strain characteristic 18th load cycle.Material constant...

In recent years, there has been an increasing interest in the composite materials reinforced with natural fibers.Due to easy and cheap methods of obtaining raw materials, possibility recycling, biodegradability, production processing safe for health, such can be a good alternative glass or carbon fibers.However, due lower mechanical properties composites, their use as construction is still limited.Nevertheless, fiber composites have characteristics that used structural applications long...

Abstract The article presents the results of tests in order to verifying effectiveness nine selected elastomeric material models (Neo-Hookean, Mooney with two and three constants, Signorini, Yeoh, Ogden, Arruda-Boyce, Gent Marlow), which constants were determined one test - uniaxial tension testing. convergence assessment analyzed made on basis their performance from an experimental bending elastomer samples numerical calculations FEM for each models. To calculate materials, a model has been...

In this work, a laminate based on bioresin and natural fibers was produced. Flax fabric selected as the fiber. The biocomposite subjected to strength tests. Stress–strain characteristics indicators were determined. workability of produced also tested using milling technology. tests carried out five carbide shank cutters for different purposes. with geometry used in processing polymer materials composites, general purpose cutters, aluminum numbers blades analyzed. order obtain information...

The influence of the addition ground buckwheat hulls on properties biocomposite basis 3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) is presented here. changes in material after repeated reprocessing—up to five recycling cycles—are written paper. Analysis shrinkage, water adsorption, selected mechanical properties, tensile impact strength, hardness and microstructure surface layer was performed. results show that application into biopolymer decreases shrinkage. It improves dimensional...

The paper presents the results of compression tests for carbon-epoxy composites in order to assess amount energy absorbed depending on process velocity and content axial fibres.Two types prepreg (UD 200 g/m 2 woven 160 ) were used prepare specimens with a diameter 20 mm height 34 mm.The subjected under various speed conditions (static, dynamic SHPB tests).The calculated specific absorption values showed 50-60% decrease increasing type architecture.The highest by share fibres sample.

This paper presents the results of research aimed at assessing effectiveness ten selected constitutive equations for hyperelastic bodies in numerical modeling first compression load cycle a polyurethane elastomer with hardness 90 Sh A depending on methodology determining material constants equations. An analysis was carried out four variants In three variants, were determined basis single test, i.e., most popular and available engineering practice, uniaxial tensile test (variant I), biaxial...

In this paper the numerical simulations of microcellular injection molding process for polymer composite with glass fiber variable content pores were carried out.In order to evaluate strength three-phase structure (polypropylene PP as a matrix, 20% wt. GF and 1-9 % vol. pores) microstructural analysis was performed calculations conducted using Mori-Tanaka homogenization model.The analyzed product (the base industrial mop) subjected loading in Ansys 14.5 commercial code, considering impact on...

Abstract The paper presents research to verify the effectiveness of nine selected material models elastomeric materials based on uniaxial tension test. Basing cyclic test elastomers sample, stress-strain characteristic for 18th load cycle was prepared. On basis obtained characteristic, values constants were calculated studied (Neo-Hookean, Mooney with two and three constants, Signorini, Yeoh, Ogden, Arruda-Boyce, Gent Marlow) simulation tensile, upsetting bending processes performed usage...

The numerical results of 1100-aluminium extrusion tests conducted at a tool velocity 36 km/h are presented.Engineering applications the considered problem concern use this technology in design an impact energyabsorbing device.Viscous and plastic properties extruded materials described on basis simulations tensile test which Bodner-Partom material model is applied.The compared with experimental ones.

Mechanical behaviour of metallic material is different during its deformation as monometallic one in comparison with a component composite. The flow characteristics two materials enhance the inhomogeneity extrusion process. This lead to poor tolerance throughout extrudate fracture core or sleeve. concept FEM Marc Mode has been presented results which may indicate possibility assessment existing criteria for composite material. present study shows that prediction based on criterion including...