A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines
Surface with curved creases derived from origami can be advantageous in roof structures which can improve strength while preserving the aesthetic values. However, there is still a great deal of ambiguity and insufficient research on the potential use of curved fold lines. This study targets to fo...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2021
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| Online Access: | http://eprints.usm.my/57037/ http://eprints.usm.my/57037/1/A%20Computational%20Study%20On%20Structural%20Behaviour%20Of%20Surfaces%20With%20Curved%20Fold%20Lines.pdf |
| _version_ | 1848883517306437632 |
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| author | Khor, Yong Yee |
| author_facet | Khor, Yong Yee |
| author_sort | Khor, Yong Yee |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Surface with curved creases derived from origami can be advantageous in roof
structures which can improve strength while preserving the aesthetic values. However,
there is still a great deal of ambiguity and insufficient research on the potential use of
curved fold lines. This study targets to formulate a systematic computational method for
the generation of surface with curved creases with different factors governing the surface
configuration. This study also aims to investigate the effects of pattern of curved crease
folds, thickness of surface and the change of the rise-span ratio on structural behaviour
of surface with curved crease in terms of load-carrying capacity and stiffness. Several
criteria had been established for the selection of origami with curved creases based on
the extensive collection by the previous researcher. The outcome shows three origami
models have potential application in roofing systems, namely Non-inflated Degree-4
Vertices, Four Circular Mountain Ridge Curves and Four Elliptical Mountain Ridge
Curves. Image Capturing Method (ICM) is adopted to develop the outlines of the origami
models and the elevation profiles from the raster 3-D paper forms. Surface formation is
then proceeded before the finite element analysis. These origami models are then scaled
with 100 and assigned with additional analytical properties to evaluate the structural
performance. Finite element analysis under self-weight condition only is carried out
corresponding to the adjustments, i.e., elevation profiles of curved fold lines, overall risespan
ratio and surface thickness. The best-performing model in terms of better stress
distribution and lower displacement with the consideration of self-weight is then
selected. The results obtained from the variation of elevation profiles of curved fold lines
show that all models under the category of Model 01 (Non-inflated Degree-4 Vertices)
and Model 02 (Four Circular Mountain Ridge Curves) failed to meet the tensile stress
limit. Comparing these two types of models, Model 01 shows relatively higher stress and displacement. In contrast, only the models under category of Model 03 satisfy the stress
limit. This is mainly due to the geometry patterns of the origami models which lead to
different stress distributions over the surfaces. For the rest of the modifications, the FE
results show that all models under the category Model 03 are still within the allowable
stress and deflection limits with slight variation. Therefore, the presence of curved fold
lines and the greater overall effective depth of the structure help to enhance the
performance in load-carrying capacity. |
| first_indexed | 2025-11-15T18:52:04Z |
| format | Monograph |
| id | usm-57037 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:52:04Z |
| publishDate | 2021 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-570372023-02-27T05:54:38Z http://eprints.usm.my/57037/ A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines Khor, Yong Yee T Technology TA1-2040 Engineering (General). Civil engineering (General) Surface with curved creases derived from origami can be advantageous in roof structures which can improve strength while preserving the aesthetic values. However, there is still a great deal of ambiguity and insufficient research on the potential use of curved fold lines. This study targets to formulate a systematic computational method for the generation of surface with curved creases with different factors governing the surface configuration. This study also aims to investigate the effects of pattern of curved crease folds, thickness of surface and the change of the rise-span ratio on structural behaviour of surface with curved crease in terms of load-carrying capacity and stiffness. Several criteria had been established for the selection of origami with curved creases based on the extensive collection by the previous researcher. The outcome shows three origami models have potential application in roofing systems, namely Non-inflated Degree-4 Vertices, Four Circular Mountain Ridge Curves and Four Elliptical Mountain Ridge Curves. Image Capturing Method (ICM) is adopted to develop the outlines of the origami models and the elevation profiles from the raster 3-D paper forms. Surface formation is then proceeded before the finite element analysis. These origami models are then scaled with 100 and assigned with additional analytical properties to evaluate the structural performance. Finite element analysis under self-weight condition only is carried out corresponding to the adjustments, i.e., elevation profiles of curved fold lines, overall risespan ratio and surface thickness. The best-performing model in terms of better stress distribution and lower displacement with the consideration of self-weight is then selected. The results obtained from the variation of elevation profiles of curved fold lines show that all models under the category of Model 01 (Non-inflated Degree-4 Vertices) and Model 02 (Four Circular Mountain Ridge Curves) failed to meet the tensile stress limit. Comparing these two types of models, Model 01 shows relatively higher stress and displacement. In contrast, only the models under category of Model 03 satisfy the stress limit. This is mainly due to the geometry patterns of the origami models which lead to different stress distributions over the surfaces. For the rest of the modifications, the FE results show that all models under the category Model 03 are still within the allowable stress and deflection limits with slight variation. Therefore, the presence of curved fold lines and the greater overall effective depth of the structure help to enhance the performance in load-carrying capacity. Universiti Sains Malaysia 2021-08-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/57037/1/A%20Computational%20Study%20On%20Structural%20Behaviour%20Of%20Surfaces%20With%20Curved%20Fold%20Lines.pdf Khor, Yong Yee (2021) A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Awam. (Submitted) |
| spellingShingle | T Technology TA1-2040 Engineering (General). Civil engineering (General) Khor, Yong Yee A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title | A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title_full | A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title_fullStr | A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title_full_unstemmed | A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title_short | A Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines |
| title_sort | computational study on structural behaviour of surfaces with curved fold lines |
| topic | T Technology TA1-2040 Engineering (General). Civil engineering (General) |
| url | http://eprints.usm.my/57037/ http://eprints.usm.my/57037/1/A%20Computational%20Study%20On%20Structural%20Behaviour%20Of%20Surfaces%20With%20Curved%20Fold%20Lines.pdf |