Analysis of Rear-End Crash on Thai Highway: Decision Tree Approach

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Champahom T., Jomnonkwao S., Chatpattananan V., Karoonsoontawong A., Ratanavaraha V.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2019

วารสาร: International Journal of Mechanical Sciences (0020-7403)

Volume number: 2019

นอก: 0020-7403

eISSN: 1879-2162

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061996091&doi=10.1016%2fj.ijmecsci.2019.02.006&partnerID=40&md5=13ba00dd4da1f2f485c842c304c6bdf9

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Attributable to their complexity the problems of a beam resting on a multi-layered foundation (BMF) have not gain sufficient attention from researchers compared to those of a beam placing on a single-layered foundation (BSF). Although they are as significantly important in engineering disciplines, few scientific articles regarding BMF were published so far. Thus, this paper is aimed to establish an effective analytical approach to study a Timoshenko beam on a multi-layered elastic foundation. Comprehensive types of beam/foundation as well as a variety of load conditions are presented. The mathematical model of BMF is developed based on a symplectic dual equation, which is derived from the Hamiltonian principle associated with the Legendre transformation. The vertical deformations of the multi-layered foundation are assumed as the linear combination of the products of the vertical deformation at layer interface and the corresponding transverse distribution function. Variational method and iterative technique are utilized to formulate and solve for the distribution functions. Discretizing each layer in the foundation into sublayers is proposed to obtain more accurate deformation and stress responses. Compared to the finite element method, this article provides a highly reliable and effective analytical approach to investigate BMF problems. ฉ 2019 Elsevier Ltd

คำสำคัญ

Beam on elastic foundation, Eigenexpansion, Multi-layered foundation, Symplectic elasticity, Timoshenko beam