An effective modeling strategy for drop test analysis of composite curved beam

Pham, Dinh Chi

doi:10.2514/6.2015-0959

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…6 The composite plate has a layup of [45 4 /0 4 /À45 4 / 90 4 ] s and dimensions of 150 Â 100 Â 5.8 mm. 3 Each composite ply is explicitly modeled by solid elements (C3D8R), while the interfaces between individual plies are characterized using Abaqus cohesive elements (COH3D8). The impactor is described as a rigid body (R3D4) with a diameter of 16 mm.…”

Section: Application Of the 3d Damage Model For Drop-weight Impact Simulations Of Hexply As4/8552 Laminatesmentioning

confidence: 99%

“…Different failure modes in composites can manifest under impact including various types of intra-ply and inter-ply damage. [1][2][3][4] In addition, the onset and growth of these failure modes depend on various impact parameters such as the properties of an impactor, impact energies, composite layup, structural configuration, or environmental conditions. 4,5 Low-velocity impact often induces damage that is less than the barely visible impact damage.…”

Section: Introductionmentioning

confidence: 99%

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A three-dimensional progressive damage model for drop-weight impact and compression after impact

Pham

Lua

Sun

et al. 2019

Journal of Composite Materials

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In this paper, an enhanced three-dimensional continuum damage mechanics model is applied to predict the drop-weight impact response and compression after impact failure of a fiber-reinforced polymer composite specimen. The three-dimensional progressive damage model incorporates a three-dimensional maximum stress criterion to predict the intra-ply damage initiation, followed by a fracture-energy-based smeared crack model to capture the post-peak softening behavior. Driven by the dominant through-the-thickness failure under impact loading, a three-dimensional continuum damage model is implemented for the three-dimensional solid element via its explicit material model for Abaqus (VUMAT) to capture the effect of three-dimensional stress state and the interaction of matrix cracking and delamination. Abaqus’ restart analysis capability is used to activate the compression after impact analysis using the final damage state from the dynamic impact analysis. Both the dynamic failure and the compression after impact are demonstrated via a suite of verification examples followed by the sensitivity analysis using distinct impact configurations. The predictive capability of the proposed three-dimensional damage model is first verified using a static open-hole tension test. Applications of the damage model are then demonstrated for simulations of the dynamic drop-weight tests and compression after impact tests. A comparative study on the developed method is performed using the results predicted from the open-source CompDam. A sensitivity study is also performed to demonstrate the impact energy-dependent failure mode. The proposed model has shown its advantages in performing a quick assessment of impact damage and its effects on the residual compressive strength.

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Section: Application Of the 3d Damage Model For Drop-weight Impact Simulations Of Hexply As4/8552 Laminatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A three-dimensional progressive damage model for drop-weight impact and compression after impact

Pham

Lua

Sun

et al. 2019

Journal of Composite Materials

Self Cite

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show abstract

“…Drop-weight impact on a laminated composite plate made of Hexply AS4/8552 is simulated to demonstrate the capability and accuracy of the developed explicit CDM module. The composite plate has a layup of [454/04/-454/904]s and a dimension of 150 x 100 x 5.8 mm 3 . Each ply of composite plate is explicitly modeled by threedimensional solid elements (C3D8R) while the interfaces between individual plies are characterized using Abaqus cohesive elements (COH3D8).…”

Section: Simulation Of Drop-weight Impact Test On Hexply As4/8552 Lammentioning

confidence: 99%

“…Laminated composite materials are vulnerable to out-of-plane impact loads. Different failure mechanisms in composites can manifest under impact including various types of intra-ply and inter-ply damage [1][2][3][4]. In addition, the onset and growth of these failure modes depend on various impact parameters such as the properties of an impactor, impact energies, composite layup, structural configuration or environmental conditions [4,5].…”

Section: Introductionmentioning

confidence: 99%

3D Progressive Failure Modeling of Drop-Weight Impact on Composite Laminates

Chinh¹

2018

Preprint

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Composite laminates are susceptible to out-of-plane impact loads due to the lack of reinforcement in the through-thickness direction. Unlike the localized damage induced by a high velocity impact where the incident energy is dissipated near a contact area, low velocity impact damage involves multiple failure mechanisms such as matrix cracking, fiber breakage, and widespread interface delaminations. Depending on the extent of damage, significant reduction in the load-bearing capability of the structure has been observed. The prediction of composite impact damage resistance by a reliable progressive damage analysis tool is essential to reduce intensive and expensive certification tests at structural level. In this work, an enhanced explicit 3D damage model is implemented via VUMAT in Abaqus to perform a drop-weight impact simulation of a [454/04/-454/904]s Hexply AS4/8552 composite laminate. The impact-induced damage and its extent are captured by a 3D Continuum Damage Model (CDM) coupled with an energy driven failure mechanism. The developed module provides a unified solution process for the impact response prediction followed by the residual strength prediction under compression within an explicit solver. Two examples are selected to demonstrate the capability of the progressive failure analysis under dynamic and static loading: 1) a drop-weight test; and 2) an open-hole tension test. Numerical predictions from the developed VUMAT are compared with the test data and predictions using the open source CompDam code developed by NASA.

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Cohesive zone models and impact damage predictions for composite structures

2015

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This article surveys existing cohesive zone models (CZM) and their use in numerical simulations for analysis impacts on composite structures and predicting the damage induced. These models are used for matrix cracks and delamination. The first part of article gives the required background on failure criteria for predicting the onset of delaminations, on fracture mechanics and the various types of CZM. The second part discusses applications of CZM to several types of impact problems with composite structures. Applications for these models to other problems are briefly mentioned at the end. CZM are now part of state of the art numerical simulations with progressive damage analysis.

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An effective modeling strategy for drop test analysis of composite curved beam

Cited by 5 publications

References 24 publications

A three-dimensional progressive damage model for drop-weight impact and compression after impact

A three-dimensional progressive damage model for drop-weight impact and compression after impact

3D Progressive Failure Modeling of Drop-Weight Impact on Composite Laminates

Cohesive zone models and impact damage predictions for composite structures

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