Finite element analysis of the hyper-elastic contact problem in automotive door sealing

Ordieres-Meré, Joaquín; Bello-García, A.; Muñoz-Munilla, V.; Del-Coz-Díaz, J.J.

doi:10.1016/j.jnoncrysol.2008.04.056

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…A typical Stress-strain behavior of PDMS is shown in figure 2. Also shown in figure 2 is the Non-Linear-Hyper-Elastic material model with 9th order Mooney-Rivlin approximation [9,11,12,13], which was used to approximate the behavior of the PDMS in our FE model [5].…”

Section: Hyper Elastic Materials Modelmentioning

confidence: 99%

Optimization of elstomeric micro-fluidic valve dimensions using non-linear finite element methods

Khawaja¹,

Raouf²,

Parvez

et al. 2009

The International Journal of Multiphysics

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We use a nonlinear finite element (FE) method model to compare, optimize and determine the limits for useful geometries of microfluidic valves in elastomer polydimethylsiloxane (PDMS). Simulations have been performed with the aim of finding the optimal shape, size and location of pressurization that minimizes the pressure required to operate the valve. One important constraint governing the design parameters is that the stresses should be within elastic limits, so that the component remains safe from any type of structural failure. To obtain reliable results, non-linear stress analysis was performed using the Mooney-Rivlin 9 parameter approximation which is based on the Hyper Elastic Material Model. A 20 noded brick element was used for the development of FE model. Mesh sensitivity analysis was also performed to assess the quality of the results. The simulations were performed with commercially available FE modeling software, developed by ANSYS Inc. to determine the effect of varying different geometric parameters on the performance of micro-fluidic valves.The aim of this work is to determine the geometry of the channel crosssection that would result in the largest deflection for the least applied pressure, i.e. to minimize the pressure needed to operate the valve.

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Section: Hyper Elastic Materials Modelmentioning

confidence: 99%

Optimization of elstomeric micro-fluidic valve dimensions using non-linear finite element methods

Khawaja¹,

Raouf²,

Parvez

et al. 2009

The International Journal of Multiphysics

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“…The seal is compressed to fill the narrow gaps between the door and the body frame when the door is closed, thus insulating the cabin from water, dust, and sound. 1–3…”

Section: Introductionmentioning

confidence: 99%

Sound transmission modeling and numerical analysis for automotive seal considering non-uniform compression

Zhu

Zhong

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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Automotive metal door panels and nonmetallic seals have complicated nonlinear interactions in their narrow mating sections, leading to non-uniform compression and complicating the sound transmission mechanism. Therefore, a new sound transmission modeling methodology and numerical analysis is developed for a refined sealing system by considering the geometrical boundaries and the non-uniform compression load. Nonlinear analysis is performed to obtain the geometrical parameters of the deformed seal, which are later input to the subsequent numerical acoustic model, by varying the compression ratios at different door locations under quantified nonlinear metal–seal interaction boundary conditions. A numerical prediction model of the sound transmission loss is constructed considering the deformed seal geometry using a double-wall-panel sound transmission model. Finite-element analysis and an infinite-element method are combined. Sound transmission loss experiments are conducted by varying the compression ratios of the seal. Experimental results are in good agreement with the numerical analysis. Furthermore, the sound transmission loss of the incident sound source with respect to a wide range of frequencies is numerically predicted for different compression magnitudes and directions using the verified methodology. This shows that the presented model and numerical methodology is valuable for optimizing the sound transmission loss performance of automotive door seals.

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“…In this sense, it is necessary to mention the importance of the design and development processes of the closing force. These forces must be balanced to seal the door closing forces of the vehicle examined under the prism of static and dynamic clamping forces (Ordieres-Meré et al, 2008). Looking at the door-closing forces in the three variants of numerical simulations that have been analysed in this work (see Figure 16 where the force is represented against time and the displacement at fixed sections), it is easy to realise that the sealing pressure is sensitive to each of the cases studied, where the final forces vary between 10% and the 25%) in the analysed quasi-static case (i.e., avoiding additional dynamic forces arising from closing door speed and its mechanical acceleration).…”

mentioning

confidence: 99%

A simulation method to estimate closing forces in car-sealing rubber elements

Ordieres-Meré¹,

Muñoz-Munilla²,

Bello-García³

et al. 2012

IJVD

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Abstract:The door-closing process can reinforce the impression of a solid, rock-proof, car body or of a rather cheap, flimsy vehicle. As there are no real prototypes during rubber profile bidding-out stages, engineers need to carry out non-linear numerical simulations that involve complex phenomena as well as static and dynamic loads for several profile candidates. This paper presents a structured virtual design tool based on FEM, including constitutive laws and incompressibility constraints allowing to predict more realistically the final closing forces and even to estimate sealing overpressure as an additional guarantee of noise insulation. Comparisons with results of physical tests are performed.Keywords: numerical simulation; product design; large deformations; viscoelastic rubber; nonlinear contact problem; viscoelastic properties; sealing and mechanical operations for rubber.Reference to this paper should be made as follows: Ordieres-Meré, J., Muñoz-Munilla, V., Bello-Garcia, A. and González-Marcos, A. (2012) 'A simulation method to estimate closing forces in car-sealing rubber elements', Int.

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Finite element analysis of the hyper-elastic contact problem in automotive door sealing

Cited by 9 publications

References 8 publications

Optimization of elstomeric micro-fluidic valve dimensions using non-linear finite element methods

Optimization of elstomeric micro-fluidic valve dimensions using non-linear finite element methods

Sound transmission modeling and numerical analysis for automotive seal considering non-uniform compression

A simulation method to estimate closing forces in car-sealing rubber elements

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