A simplified model for barrier–vehicle interaction in a rear crash for early phase development and solution spaces

Song, L.; Pabst, Michael J.; Duddeck, Fabian; Fender, Johannes

doi:10.1080/13588265.2017.1350091

Cited by 5 publications

(7 citation statements)

References 7 publications

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“…Especially modeling of the latter is demanding. 2 Probably the first approach based on LMS for this offset test was published by Carrera et al 15 with five masses and 14 springs. Gabler et al 16 employed it to assess car-to-car frontal crash compatibility and Lim 17,18 included lumped masses and springs representing occupants.…”

Section: Lumped Mass-spring Models For Frontal Impactmentioning

confidence: 99%

“…to the right). Nodes having identical positions are merged; in this example, the merge sets are (2,5), (7,8), and (10,11). Merged nodes obtain the minimum ID number of the parent nodes.…”

Section: Subprocess 1-gap Values and Elimination Of Gapsmentioning

confidence: 99%

“…For example, the nodes (0, 1, 2, 4) have no block length on their left, whereas node 3 has one grain block length. For the complex situation of node 6, we obtain for the three links to nodes (2,3,4) the block values of (0, 1, 0) plus the new block lengths of (0, 2, 4). The maximum of the sum of these two contributions is taken as block length for node 6, which is here 4.…”

Section: Subprocess 2-block Values and Elimination Of Blocksmentioning

confidence: 99%

“…Nodes (1,4,18) are start nodes of the load paths; nodes (15,16,17) are the respective end nodes. Node 15 has the minimal x-position and therefore defines x max as 9d, see equation (2). This position marks the remainder of the vehicle structure, which should be protected and must not deform; visualized as a big gray block in Figure 8(c).…”

Section: Subprocess 3-finalization the Finalized Dsm Ismentioning

confidence: 99%

“…This paper focuses on simplified mechanical models used in early phase design to describe crashworthiness in frontal impact cases. Related work has been done on other crash load cases, for example, side and rear impacts or pedestrian safety, which generally requires additional investigations to transfer results from frontal impact, see, for example, Mo¨ßner et al, 1 Song et al, 2 and Trella et al 3 First, in this section, the state of the art in simplified modeling for front crash is discussed together with a recent development, the usage of simplified models for Solution Spaces. Then, in the remainder of this paper, the new approach for Deformation Space Models (DSMs) is presented.…”

Section: Introductionmentioning

confidence: 99%

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Early phase modeling of frontal impacts for crashworthiness: From lumped mass–spring models to Deformation Space Models

Lange

Fender

Song

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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Because of the drawbacks of standard lumped mass–spring models discussed at the beginning of this paper, a new approach for simplified modeling of frontal impacts appropriate for early phase crashworthiness design is proposed. It is based on a first step, the Geometry Space Model, representing the real location of the structural components with deformable, non-deformable, and gap parts. This is then transformed by a new algorithm into the Deformation Space Model which considers only the available free deformation lengths and can be used to assess the correct deformation modes of complex structural systems. These developments are embedded in a wider research field, already published, where Solution Spaces are established for set-based design of the force–displacement curves for all springs. Together with this Solution Space technology, the proposed new simplified modeling approach for frontal impacts will make early phase development more efficient in the future.

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Section: Lumped Mass-spring Models For Frontal Impactmentioning

confidence: 99%

“…to the right). Nodes having identical positions are merged; in this example, the merge sets are (2,5), (7,8), and (10,11). Merged nodes obtain the minimum ID number of the parent nodes.…”

Section: Subprocess 1-gap Values and Elimination Of Gapsmentioning

confidence: 99%

Section: Subprocess 2-block Values and Elimination Of Blocksmentioning

confidence: 99%