Failure Modes for Single-Layer Reticulated Domes under Oblique Impact

FE models of both the single-layer Kiewitt-8 reticulated domes with a span of 60m and the cylindrical impactor were developed incorporating ANSYS/LS-DYNA. Afterward, fourteen groups impact are simulated by changing the impact position or impacted angle on reticulated dome, and impact velocity and mass of impactor are changed for each group impact. On the basis of large numbers of numerical simulations, characteristics of dynamic response for reticulated dome under impact are shown. And four failure modes (Members slightly damaged, Local collapse of dome, Global collapse of dome, Members shear failed) are presented for single-layer Kiewitt-8 reticulated dome under diverse impact. The distributing of failure modes for the fourteen types impact are different from each other, and the adverse position and angle are summrized.

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Dynamic Response of Reticulated Domes under the Impact

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.58 ◽

2014 ◽

Vol 638-640 ◽

pp. 58-61

Author(s):

Chang Wu ◽

Xiu Li Wang ◽

Ya Xiong Liang ◽

Zhan Zhong Yin

Keyword(s):

Dynamic Response ◽

Failure Modes ◽

Numerical Models ◽

Single Layer ◽

Response Mode ◽

Object Size ◽

Response Modes ◽

Reticulated Domes ◽

Parametric Analyses ◽

The Impact

As the study of the dynamic response of single-layer reticulated domes under impact, Numerical models for single-layer Kiewitt-6 reticulated domes with sub steel cube column were established by the ANSYS/ LS-DYNA program and a dynamic analysis were carried out. Four failure modes for the reticulated domes were put forward according as the dynamic response and plastic deformation. The parametric analyses on the dynamic response of single-layer reticulated domes with sub steel cube column under the impact loading are carried out, by changing the impact velocity, mass of impact object, size of impact object and impact location.The effects of these parameters on the response mode of the structures are investigated, and the distribution regularity of the response modes of the structures with different parameters is explained.

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Impact Response and Failure Mode for Single-Layer Geodesic Spherical Domes under Impact Load

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.351-352.80 ◽

2013 ◽

Vol 351-352 ◽

pp. 80-84

Author(s):

Duo Zhi Wang ◽

Feng Fan ◽

Xu Dong Zhi ◽

Jun Wu Dai

Keyword(s):

Dynamic Response ◽

Failure Mode ◽

Failure Modes ◽

Impact Load ◽

Single Layer ◽

Impact Response ◽

Impact Location ◽

Parametric Analyses ◽

The Impact ◽

Local Dent

Based on the ANSYS/LS-DYNA software, the analysis for the 40m span geodesic spherical domes under impact load is carried out. By changing the mass of impact object, impact velocity and impact location, the parametric analyses on the dynamic response of the structures under the impact loading are carried out. The three failure modes of the spherical domes are summed up: local dent of structure and global collapse of structure, Punch failure of structure. Then the characteristics of the dynamic response of the structure with different failure mode, such as the impact course, impact load, speed of nodes, displacement of nodes, and stress of bars, are investigated. It is further improvement of failure mode for single-layer reticulated dome under impact.

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Numerical Investigation on the Reticulated Domes Subjected to the Multi-Point Impact

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.274.523 ◽

2013 ◽

Vol 274 ◽

pp. 523-526 ◽

Cited By ~ 3

Author(s):

Li Lin ◽

Feng Fan ◽

Xu Dong Zhi

Keyword(s):

Dynamic Response ◽

Single Layer ◽

Close Correlation ◽

Initial Kinetic Energy ◽

Fe Model ◽

Local Damage ◽

Damage Mode ◽

Global Collapse ◽

Simulation Results ◽

Reticulated Domes

In the present paper, FE model of the single-layer Kiewitt-8 reticulated domes with a span of 60m was built with using of ANSYS/AUTODYN. The dynamic response of the reticulated domes against the multi-point impact was investigated, where a special impactor was involved. Based on the simulation results, four damage modes were concluded，which are local damage, global collapse, local damage with punching plug, punching plug respectively. It was indicated that the initial kinetic energy of the impactor have a close correlation with the damage mode. Furthermore, the characteristics of dynamic response for each damage mode were shown.

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Experimental and Numerical Plastic Response and Failure of Laterally Impacted Rectangular Plates

Journal of Offshore Mechanics and Arctic Engineering ◽

10.1115/1.4024274 ◽

2013 ◽

Vol 135 (4) ◽

Cited By ~ 30

Author(s):

B. Liu ◽

R. Villavicencio ◽

C. Guedes Soares

Keyword(s):

Finite Element ◽

Numerical Simulations ◽

Failure Modes ◽

Mesh Size ◽

Plastic Behavior ◽

Finite Element Models ◽

Rectangular Plates ◽

Marine Structures ◽

Fine Mesh ◽

The Impact

Experimental and numerical results of drop weight impact test are presented on the plastic behavior and fracture of rectangular plates stuck laterally by a mass with a hemispherical indenter. Six specimens were tested in order to study the influence of the impact velocity and the diameter of the indenter. The impact scenarios could represent abnormal actions on marine structures, such as ship collision and grounding or dropped objects on deck structures. The tests are conducted on a fully instrumented impact tester machine. The obtained force-displacement response is compared with numerical simulations, performed by the LS-DYNA finite element solver. The simulations aim at proposing techniques for defining the material and restraints on finite element models which analyze the crashworthiness of marine structures. The mesh size and the critical failure strain are predicted by numerical simulations of the tensile tests used to obtain the mechanical properties of the material. The experimental boundary conditions are modeled in order to represent the reacting forces developed during the impact. The results show that the critical impact energy until failure is strongly sensitive to the diameter of the striker. The shape of the failure modes is well predicted by the finite element models when a relatively fine mesh is used. Comments on the process of initiation and propagation of fracture are presented.

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Failure modes and failure mechanisms of single-layer reticulated domes subjected to interior blasts

Thin-Walled Structures ◽

10.1016/j.tws.2018.07.028 ◽

2018 ◽

Vol 132 ◽

pp. 208-216 ◽

Cited By ~ 2

Author(s):

Jialu Ma ◽

Feng Fan ◽

Lingxin Zhang ◽

Chengqing Wu ◽

Xudong Zhi

Keyword(s):

Failure Modes ◽

Failure Mechanisms ◽

Single Layer ◽

Reticulated Domes

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Failure Modes of a Reticulated Dome in a Small Airplane Crash

Advances in Civil Engineering ◽

10.1155/2019/5025637 ◽

2019 ◽

Vol 2019 ◽

pp. 1-10

Author(s):

L. Lin ◽

Y. X. Ren ◽

M. Y. Huang ◽

X. D. Zhi ◽

D. Z. Wang

Keyword(s):

Failure Modes ◽

Impact Resistance ◽

Test Subject ◽

Engineering Research ◽

Airplane Crash ◽

Reticulated Domes ◽

Small Airplanes ◽

Span 60 ◽

The Impact ◽

Roof Sheathing

Since the 9/11 incident, many engineering research works have been conducted on the impact resistance of large-span space structures. In the present study, a small airplane, Bombardier Challenger 850, was chosen as the test subject. An airplane crash on a single-layered Kiewitt-8 reticulated dome with span 60 m considering roof sheathing effect was simulated using ANSYS/LS-DYNA software. The principles of establishing the numerical model of small airplanes were determined. In addition, the impact styles of small airplane and impact positions on the dome were investigated. The failure modes of reticulated dome with roof sheathing due to small airplane crash were identified. Furthermore, the failure modes between reticulated domes with and without roof sheathing were compared and the effect of roof sheathing on the failure modes of reticulated dome under a small airplane crash was investigated.

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Finite Element Analysis of a Single-Layer Reticulated Dome under Impact Loading

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.327 ◽

2010 ◽

Vol 163-167 ◽

pp. 327-331 ◽

Cited By ~ 1

Author(s):

Liang Zheng ◽

Zhi Hua Chen

Keyword(s):

Finite Element ◽

Dynamic Response ◽

Impact Force ◽

Impact Load ◽

Residual Deformation ◽

Time History ◽

Single Layer ◽

Element Analysis ◽

Deformation Stage ◽

The Impact

Finite element model of both the single-layer Schwedler reticulated dome with the span of 50m and a Cuboid impactor were developed, incorporating ANSYS/LS-DYNA. PLASTIC_KINEMATIC (MAT_003) material model which takes stain rate into account was used to simulate steel under impact load. The automatic point to surface contact (NODES TO SURFACE) was applied between the dome and impact block. Three stages of time history curve of the impact force on the apex of the single-layer Scheduler reticulated dome including the impact stage, stable stalemate stage, the decaying stage were generalized according to its dynamic response. It must be pointed out that the peak of the impact force of the single-layer reticulated dome increase with the increase of the weight and the velocity of the impact block, but the change of the velocity of the impact block is more sensitive than the change of weight of the impact block for the effect of the peak of the impact force, and a platform value of the impact force of the single-layer reticulated dome change near a certain value, and the duration time of the impact gradually increase. Then four stages of time history curve of the impact displacement were proposed according to the dynamic response of impact on the apex of the single-layer reticulated dome based on numerical analysis. Four stages include in elastic deformation stage, plastic deformation stage, elastic rebound stage, free vibration stage in the position of the residual deformation.

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Size Effect and Material Property Effect of the Impactor on the Damage Modes of the Single-Layer Kiewitt-8 Reticulated Dome

The Scientific World JOURNAL ◽

10.1155/2013/848347 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Li Lin ◽

Feng Fan ◽

XuDong Zhi ◽

HongFeng Yin

Keyword(s):

Size Effect ◽

Material Property ◽

Single Layer ◽

Space Structures ◽

Large Space ◽

Large Space Structures ◽

The Subject ◽

Global Collapse ◽

The Difference ◽

The Impact

The dynamic response of large space structures under accidental impact has been the subject of intense research since the occurrence of the 9/11 incident. In the present paper, using the 3D ANSYS/LS-DYNA, size effect and material property effect of the impactor on the damage modes of the single-layer Kiewitt-8 reticulated dome were investigated, respectively, where the impactor was the cylinder and the impact direction was vertical. Firstly, analytical results with the rigid impactor indicated that the impactor size can change the damage mode of the reticulated dome. It was found that the probability happening to the global collapse has an obvious rise with the size increase of the impactor. Furthermore, the deformable impactor was considered to figure out the difference with the rigid impactor; the comparisons indicated that the deformable impactor, which has the same mass and the same striking velocity with the rigid impactor, can contribute to the occurrence of the global collapse at a certain initial striking condition.

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Ballistic performance and damage simulation of fiber metal laminates under high-velocity oblique impact

International Journal of Damage Mechanics ◽

10.1177/1056789519900784 ◽

2020 ◽

Vol 29 (7) ◽

pp. 1011-1034 ◽

Cited By ~ 3

Author(s):

Chao Zhang ◽

Qian Zhu ◽

Jose L Curiel-Sosa ◽

Tinh Quoc Bui

Keyword(s):

Impact Velocity ◽

High Velocity ◽

Damage Mechanics ◽

Failure Modes ◽

Element Model ◽

Oblique Impact ◽

Ballistic Performance ◽

Fiber Metal Laminates ◽

Fiber Metal ◽

The Impact

Fiber metal laminates have been successfully applied in military aircrafts, armor vehicles and other modern engineering industries as protective structures due to their outstanding impact resistant properties. Prediction of the ballistic performance and investigation on the damage mechanism of the fiber metal laminates under general oblique impact conditions still remain a very challenging issue. In this study, a nonlinear dynamic finite element model in terms of continuum damage mechanics including intra- and inter-layer failure modes is presented. The accuracy of this model is validated with available experimental data. The damage and ballistic performance of two different structural fiber metal laminates subjected to high-velocity oblique impact by rigid hemispherical nose projectile with angles of 0°, 30°, 45° and 60° are studied. The numerical results show that the projectile deflects when the oblique impact occurs and the deflection angle decreases with increasing the impact velocity. The residual velocity of the projectile and the energy absorption of the target are related to the initial impact velocity and impact angle of the projectile. The proposed simulation approach offers a new proper reference for numerical investigations of common oblique impact problems in other fiber metal laminates.

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