An inverse solution for low-velocity impact in composite plates

Christoforou, Andreas P.; Elsharkawy, Abdallah A.; Guedouar, Lotfi H.

doi:10.1016/s0045-7949(01)00113-4

Cited by 22 publications

(12 citation statements)

References 12 publications

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“…To ensure the accuracy of the present model, the contact force determined from the springs-masses model is compared with the contact-force determined from the direct solution method based on the exact impactor mass and velocity values [27], the inverse model prediction [28] and the experiment [29]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires

Khalili

Shokuhfar

Malekzadeh

et al. 2007

Thin-Walled Structures

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Section: Resultsmentioning

confidence: 99%

Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires

Khalili

Shokuhfar

Malekzadeh

et al. 2007

Thin-Walled Structures

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“…The maximum contact stress obtained in this case is 1.3 times higher than that obtained from the Hertz theory [5,9,11]. The size of the contact area at the normal wheel-rail geometry as well as the type of contact stresses depend on the normal load between a wheel and a rail, the profiles of a wheel and a rail, the transverse and angular position of the wheel pair on rails as well as the angle of the tread surfaces of rails [3,7,15]. According to the shape of the contact area and the type of deformation the intensity of pressure within contact surface is distributed by the semi-elliptic law.…”

Section: The Determination Of the Stresses In The Interaction Of Wheementioning

confidence: 84%

“…The Hertz theory is valid at the following assumptions: the contact surfaces are homogeneous and isotropic; the frictional forces in the contact area can be neglected; the size of the contact area is negligible compared to the sizes of contact bodies and the characteristic radii of curvature of undeformed surfaces; for the contact problem the solution of a linear elastic half space is used; and the contact surfaces are smooth enough [15].…”

Section: Contact Problemmentioning

confidence: 99%

Modeling the dynamic behavior of railway track taking into account the occurrence of defects in the system wheel-rail

et al. 2017

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Abstract. This paper investigates the influence of wheel defects on the development of rail defects up to a state where rail prompt replacement becomes necessary taking into account different models of the dynamic contact between a wheel and a rail. In particular, the quasistatic Hertz model, the linear elastic model and the elastoplastic Aleksandrov-Kadomtsev model. Based on the model of the wheel-rail contact the maximum stresses are determined which take place in the rail in the presence of wheel defects (e.g. flat spot, weld-on deposit, etc.). In this paper, the solution of the inverse problem is presented, i.e., investigation of the influence of the strength of a wheel impact upon rails on wheel defects as well as evaluation of the stresses emerging in rails. During the motion of a railway vehicle, the wheel pair position in relation to rails changes significantly, which causes various combinations of wheel-rail contact areas. Even provided the constant axial load, the normal stresses will substantially change due to the differences in the radii of curvature of contact surfaces of these areas, as well as movement velocities of railway vehicles.

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“…The contact force obtained by the present procedure is used as an input for further analysis of the hybrid composite plate, like the deflection under the point of impact and the failure prediction of the plate, etc. The load function can be demonstrated as follows [31,32]:…”

Section: Dynamic Response Of the Platementioning

confidence: 99%

Analysis and optimization of smart hybrid composite plates subjected to low-velocity impact using the response surface methodology (RSM)

Shokuhfar

Khalili

Ghasemi

et al. 2008

Thin-Walled Structures

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An inverse solution for low-velocity impact in composite plates

Cited by 22 publications

References 12 publications

Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires

Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires

Modeling the dynamic behavior of railway track taking into account the occurrence of defects in the system wheel-rail

Analysis and optimization of smart hybrid composite plates subjected to low-velocity impact using the response surface methodology (RSM)

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