Impact testing and simulation of a polypropylene component. Correlation with strain rate sensitive constitutive models in ANSYS and LS-DYNA.

Arriaga, Aitor; Pagaldai, Rikardo; Zaldua, Ane Miren; Chrysostomou, A.; O'Brien, Michael

doi:10.1016/j.polymertesting.2009.10.007

Cited by 20 publications

(8 citation statements)

References 2 publications

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“…In this case, the missing test data is internally generated by SAMP-1. [33] The actual yield surface formulation of SAMP-1 can only be attained through including tension, compression, and shear test data in calculations; therefore, three distinct mechanical tests such as tension, compression, and shear are mandatory for SAMP-1. Moreover, multiple tensile stress-strain curves obtained under various strain rates are compulsory to take strain rate effect on the mechanical response into account.…”

Section: Numerical Modeling Of Three-point Bending Testsmentioning

confidence: 99%

“…Moreover, the corresponding postyield stress of σ T for this lowest strain rate has been obtained as 38.273 MPa. [43] After substituting those values into Equation (33), it can be expressed as shown below;σ A = 38:273 1 + 0:0359 ln _ ε p 0:0001 ð38Þ…”

Section: Analytical Calculations For Strain Ratesmentioning

confidence: 99%

“…Because of the lack of constitutive material model for polymers, researchers are forced to determine mechanical characteristics of polymers experimentally and validate the results numerically by using elastic‐plastic material models available in various finite element codes. [ 33‐35 ] However, any material model utilized in numerical study needs to consider all the effects including strain rate sensitivity, temperature dependence, damage, dissimilar material behavior in tension and compression, strain softening and re‐hardening features of polymers for satisfactory prediction but such material model in any finite element code has not been available in current [ 36 ] and developing a reliable material model in finite element codes to predict the flexural and impact response of polymers is currently under particular examination. [ 37 ] Thus, using semi‐empirical material models like semi‐analytical material model (SAMP‐1) is very preferable in numerical studies.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigation on flexural behavior of acrylonitrile‐butadiene‐styrene polymer

Dundar

Dhaliwal

Ayorinde

2020

Polymer Engineering & Sci

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Acrylonitrile‐butadiene‐styrene (ABS) is an extensively utilized rubber‐toughened amorphous thermoplastic in industry. Compared to other amorphous thermoplastics, the most promising mechanical quantity of ABS is its high impact resistance. Thus, understanding the mechanical response of ABS to multiaxial loads is of the great industrial concern. The primary objective of this study was to characterize the flexural response of ABS by conducting three‐point bending tests at two distinct deformation rates of 5 and 10 mm/s to figure out the deformation rate effect on the flexural response of ABS. It was observed that the ABS act stiffer with an increased deformation rate. Numerical implementation of three‐point bending tests for each deformation rate was performed using the semi‐analytical material model (SAMP‐1) available in Ls‐Dyna finite element code. The simulations for each deformation rate were run depending on SAMP‐1 and Von‐Misses yield surface formulations to figure out the effect of nonidentical material behavior of ABS in tension, compression, and shear on flexural response. The percentage error in the predicted peak force values considering the compression and shear test data (SAMP‐1) and without it (Von Misses) was 3% and 7% for deformation rate of 5 mm/s and 5% and 12% for deformation rate of 10 mm/s. Hence, predicting the flexural behavior of ABS accurately, dissimilar material behavior needs to be taken into consideration. Moreover, associated and nonassociated flow rule effects on the flexural response of ABS were numerically investigated and there was no significant influence observed on the flexural response of ABS.

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Section: Numerical Modeling Of Three-point Bending Testsmentioning

confidence: 99%

Section: Analytical Calculations For Strain Ratesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigation on flexural behavior of acrylonitrile‐butadiene‐styrene polymer

Dundar

Dhaliwal

Ayorinde

2020

Polymer Engineering & Sci

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“…No differentiation between tension and compression properties is possible in this model. Nevertheless, the model was used in previous works [34,35] to describe the mechanical behavior of thermoplastics. In this paper, the material model was used in particular due to its computational performance, simple calibration, and for benchmarking purposes.…”

Section: Modelmentioning

confidence: 99%

Experimental and Numerical Investigation of the Behavior of Automotive Battery Busbars under Varying Mechanical Loads

et al. 2020

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Automotive high-voltage busbars are critical electrical components in electric vehicle battery systems as they connect individual battery modules and form the connection to the vehicle’s powertrain. Therefore, a vehicle crash can pose a significant risk to safety by compromising busbar insulation, leading to electrical short circuits inside the battery. In turn, these can trigger thermal chain reactions in the cell modules of the battery pack. In order to ensure a safe design in future applications of busbars, this study investigated the mechanical behavior of busbars and their insulation. Our results indicated that crashlike compressive and bending loads lead to complex stress states resulting in failure of busbar insulation. To estimate the safety of busbars in the early development process using finite element simulations, suitable material models were evaluated. Failure of the insulation was included in the simulation using an optimized generalized incremental stress state dependent model (GISSMO). It was shown that sophisticated polymer models do not significantly improve the simulation quality. Finally, on the basis of the experimental and numerical results, we outline some putative approaches for increasing the safety of high-voltage busbars in electric vehicles, such as choosing the insulating layer material according to the range of expected mechanical loads.

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“…Thermoplastics like polypropylene have several attractive properties. They are impact resistant, lightweight, reasonably low cost, easy to construction, renewable, strain rate sensitive, temperature-sensitive, sustainable, and depending on the environment and additives [30][31][32][33][34][35][36][37][38]. Therefore, the interest of different industries in using such materials in structural and safety parts has grown.…”

Section: Introductionmentioning

confidence: 99%

Energy absorption assessment of bio-mimicked hybrid Al/PP sandwich tube: Experimental and Numerical Investigation

Faraz

Ahmadi

Liaghat

et al. 2022

Thin-Walled Structures

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Impact testing and simulation of a polypropylene component. Correlation with strain rate sensitive constitutive models in ANSYS and LS-DYNA.

Cited by 20 publications

References 2 publications

Experimental and numerical investigation on flexural behavior of acrylonitrile‐butadiene‐styrene polymer

Experimental and numerical investigation on flexural behavior of acrylonitrile‐butadiene‐styrene polymer

Experimental and Numerical Investigation of the Behavior of Automotive Battery Busbars under Varying Mechanical Loads

Energy absorption assessment of bio-mimicked hybrid Al/PP sandwich tube: Experimental and Numerical Investigation

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