A morphogenesis method for shape optimization of framed structures subject to spatial constraints
•A morphogenesis method is proposed for framed structures subject to spatial constraints.•It combines direct element addition/ elimination and nodal adjustment.•Several examples are presented to illustrate the availability of this method. A morphogenesis method is proposed for the topology and shape...
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| Published in | Engineering structures Vol. 77; pp. 109 - 118 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
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Elsevier Ltd
15.10.2014
Elsevier |
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| Abstract | •A morphogenesis method is proposed for framed structures subject to spatial constraints.•It combines direct element addition/ elimination and nodal adjustment.•Several examples are presented to illustrate the availability of this method.
A morphogenesis method is proposed for the topology and shape optimization of framed structures subject to spatial constraints. This combines direct elemental addition, or elimination, and free nodal shift, or restricted nodal shift related to the structures geometry. The optimization is based on elemental and nodal sensitivity information to generate or amend the structural topology and adjust the nodal positions to achieve a structure with minimum strain energy. In this method, the design parameters, such as supporting conditions, spatial constraints, etc, have significant influence on the final structural form; so various structural forms can be obtained by changing these design parameters in the project design phase. Several numerical examples are provided to illustrate the validity of this method and the mechanical behaviour of these structures. Results show that this can effectively reduce the structural bending moments and ensure sufficient structural stiffness. |
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| AbstractList | •A morphogenesis method is proposed for framed structures subject to spatial constraints.•It combines direct element addition/ elimination and nodal adjustment.•Several examples are presented to illustrate the availability of this method.
A morphogenesis method is proposed for the topology and shape optimization of framed structures subject to spatial constraints. This combines direct elemental addition, or elimination, and free nodal shift, or restricted nodal shift related to the structures geometry. The optimization is based on elemental and nodal sensitivity information to generate or amend the structural topology and adjust the nodal positions to achieve a structure with minimum strain energy. In this method, the design parameters, such as supporting conditions, spatial constraints, etc, have significant influence on the final structural form; so various structural forms can be obtained by changing these design parameters in the project design phase. Several numerical examples are provided to illustrate the validity of this method and the mechanical behaviour of these structures. Results show that this can effectively reduce the structural bending moments and ensure sufficient structural stiffness. |
| Author | Jiang, Bao-Shi Cui, Chang-Yu |
| Author_xml | – sequence: 1 givenname: Chang-Yu surname: Cui fullname: Cui, Chang-Yu organization: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, PR China – sequence: 2 givenname: Bao-Shi surname: Jiang fullname: Jiang, Bao-Shi organization: College of Civil Engineering and Architecture, Hainan University, Haikou 570228, PR China |
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| Cites_doi | 10.1007/s00158-002-0208-0 10.1007/s11431-011-4701-9 10.1016/j.compstruc.2011.08.013 10.1016/j.engstruct.2013.07.007 10.1016/S0045-7825(99)00359-X 10.1016/j.finel.2007.06.006 10.1007/BF01278495 10.1016/S0045-7825(02)00297-9 10.1007/s00158-006-0043-9 10.1061/(ASCE)0733-9445(1994)120:10(3063) 10.1115/1.2204075 10.1016/S0045-7825(01)00333-4 10.1016/j.engstruct.2011.12.034 10.1016/j.engstruct.2013.10.032 10.1007/s00158-008-0237-4 10.1016/j.engstruct.2008.02.012 10.2514/2.626 10.1002/9780470432709 10.1016/S0045-7949(97)00050-3 10.1007/BF01197710 |
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| Keywords | Topology optimization Strain energy sensitivity Shape optimization Spatial constraints Structural design Stress analysis Shape analysis Strain energy Tree structure Topology Optimization Morphogenesis Bridges Frame structure Truss structure Example Reticulated shell Numerical simulation Structural analysis Method study |
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| SubjectTerms | Applied sciences Buildings. Public works Computation methods. Tables. Charts Exact sciences and technology Shape optimization Spatial constraints Strain energy sensitivity Stresses. Safety Structural analysis. Stresses Topology optimization |
| Title | A morphogenesis method for shape optimization of framed structures subject to spatial constraints |
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