Displacement-Based Approach for the Assessment of Overturning Stability of Rectangular Rigid Barriers Subjected to Point Impact
AbstractIn this paper, a new design approach based on the principles of energy and momentum conservation is proposed for the design of free-standing rigid barriers subject to point impact. The novelty of this approach lies in the fact that the mass inertia effect of the barriers and the coefficient...
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| Veröffentlicht in: | Journal of engineering mechanics 2018-02, Vol.144 (2) |
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| container_title | Journal of engineering mechanics |
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| creator | Lam, Nelson T. K Yong, Arnold C. Y Lam, Carlos Kwan, Julian S. H Perera, Jude Shalitha Disfani, Mahdi M Gad, Emad |
| description | AbstractIn this paper, a new design approach based on the principles of energy and momentum conservation is proposed for the design of free-standing rigid barriers subject to point impact. The novelty of this approach lies in the fact that the mass inertia effect of the barriers and the coefficient of restitution for the impact are considered. With the new design approach, it is shown that for the same impact scenario, a taller barrier actually has a higher factor of safety due to the increased mass inertia—a result that could not have been obtained in a force-based calculation. The new approach has been verified by results from systematic physical and simulated impact experimentation. This paper presents full details of the derivation of the analytical expressions, their experimental verification, and illustration by a worked example. A design chart is also presented to make the proposed methodology easier to implement. |
| doi_str_mv | 10.1061/(ASCE)EM.1943-7889.0001383 |
| format | Article |
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K ; Yong, Arnold C. Y ; Lam, Carlos ; Kwan, Julian S. H ; Perera, Jude Shalitha ; Disfani, Mahdi M ; Gad, Emad</creator><creatorcontrib>Lam, Nelson T. K ; Yong, Arnold C. Y ; Lam, Carlos ; Kwan, Julian S. H ; Perera, Jude Shalitha ; Disfani, Mahdi M ; Gad, Emad</creatorcontrib><description>AbstractIn this paper, a new design approach based on the principles of energy and momentum conservation is proposed for the design of free-standing rigid barriers subject to point impact. The novelty of this approach lies in the fact that the mass inertia effect of the barriers and the coefficient of restitution for the impact are considered. With the new design approach, it is shown that for the same impact scenario, a taller barrier actually has a higher factor of safety due to the increased mass inertia—a result that could not have been obtained in a force-based calculation. The new approach has been verified by results from systematic physical and simulated impact experimentation. This paper presents full details of the derivation of the analytical expressions, their experimental verification, and illustration by a worked example. 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With the new design approach, it is shown that for the same impact scenario, a taller barrier actually has a higher factor of safety due to the increased mass inertia—a result that could not have been obtained in a force-based calculation. The new approach has been verified by results from systematic physical and simulated impact experimentation. This paper presents full details of the derivation of the analytical expressions, their experimental verification, and illustration by a worked example. A design chart is also presented to make the proposed methodology easier to implement.</description><subject>Barriers</subject><subject>Energy conservation</subject><subject>Experimentation</subject><subject>Inertia</subject><subject>Mathematical analysis</subject><subject>Point impact</subject><subject>Stability analysis</subject><subject>Technical Papers</subject><issn>0733-9399</issn><issn>1943-7889</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kEFPwjAYhhujiYj-h0Yvehi2dLSrt4lTSSAY0HPTjRZKxjbbzoSTf90uEOPFU5Pve5-n-V4ArjEaYETx_W26HGd32WyAeUwiliR8gBDCJCEnoPc7OwU9xAiJOOH8HFw4tw2ZmHLaA99PxjWlLNROVT56lE6tYNo0tpbFBuraQr9RMHVOOdclYK3h_EtZ39rKVGu49DI3pfH7brFQhZfVui2lhQuzNiv4KK01yjq4bPNt2Aa5r-FbbYJpsmtk4S_BmZalU1fHtw8-nrP38Ws0nb9Mxuk0koRRH1GF6ZAzpDXiCVcjEq8wRqzAOdUJYZoQLhkZEYS4inPGhwizwIRpzonGQ9IHNwdvOO2zVc6LbR1uCF8KHLwEU85GIfVwSBW2ds4qLRprdtLuBUaiK1yIrnCRzURXrujKFcfCA0wPsHSF-qM_kv-DP3H0hS0</recordid><startdate>20180201</startdate><enddate>20180201</enddate><creator>Lam, Nelson T. 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With the new design approach, it is shown that for the same impact scenario, a taller barrier actually has a higher factor of safety due to the increased mass inertia—a result that could not have been obtained in a force-based calculation. The new approach has been verified by results from systematic physical and simulated impact experimentation. This paper presents full details of the derivation of the analytical expressions, their experimental verification, and illustration by a worked example. A design chart is also presented to make the proposed methodology easier to implement.</abstract><cop>New York</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)EM.1943-7889.0001383</doi></addata></record> |
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| identifier | ISSN: 0733-9399 |
| ispartof | Journal of engineering mechanics, 2018-02, Vol.144 (2) |
| issn | 0733-9399 1943-7889 |
| language | eng |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Barriers Energy conservation Experimentation Inertia Mathematical analysis Point impact Stability analysis Technical Papers |
| title | Displacement-Based Approach for the Assessment of Overturning Stability of Rectangular Rigid Barriers Subjected to Point Impact |
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