Elastic stability of cylindrical shells with soft elastic cores
Thin walled cylindrical shell structures are widespread in nature: examples include porcupine quills, hedgehog spines and plant stems. All have an outer shell of almost fully dense material supported by a low density, cellular core. In nature, all are loaded in some combination of axial compression...
محفوظ في:
| المؤلف الرئيسي: | |
|---|---|
| التنسيق: | masterThesis |
| منشور في: |
1994
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/6689 http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php |
| الوسوم: |
إضافة وسم
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| _version_ | 1864513480613167104 |
|---|---|
| author | Karam, Gebran Nizar |
| author_facet | Karam, Gebran Nizar |
| author_role | author |
| dc.creator.none.fl_str_mv | Karam, Gebran Nizar |
| dc.date.none.fl_str_mv | 1994 2017-12-01T10:12:04Z 2017-12-01T10:12:04Z 2017-12-01 |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10725/6689 Karam, G. N. (1994). Elastic stability of cylindrical shells with soft elastic cores: biomimicking natural tubular structures (Doctoral dissertation, Massachusetts Institute of Technology) http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php file:///C:/Users/rola.habre/Downloads/30692421-MIT%20(1).pdf |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Massachusetts Institute of Technology |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Elastic stability of cylindrical shells with soft elastic cores biomimicking natural tubular structures |
| dc.type.none.fl_str_mv | Thesis info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/masterThesis |
| description | Thin walled cylindrical shell structures are widespread in nature: examples include porcupine quills, hedgehog spines and plant stems. All have an outer shell of almost fully dense material supported by a low density, cellular core. In nature, all are loaded in some combination of axial compression and bending: failure is typically by buckling. Natural structures are often optimized. Here we have investigated and characterized the morphology of several natural tubular structures. Mechanical models recently developed to analyze the elastic buckling of a thin cylindrical shell supported by a soft elastic core (G.N. Karam and L.J. Gibson, Elastic buckling of cylindrical shells with elastic cores, I: Analysis, submitted to Int. J. Solids Structures, 1994, G.N. Karam and L.J. Gibson, Elastic buckling of cylindrical shells with elastic cores, II: Experiments, submitted to Int. J. Solids Structures, 1994) were used to study the mechanical efficiency of these natural structures. It was found that natural structures are often more mechanically efficient than equivalent weight hollow cylinders. Biomimicking of natural cylindrical shell structures may offer the potential to increase the mechanical efficiency of engineering structures. |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| id | LAURepo_4ac2a545eac40e1f41b9c780ba513b63 |
| identifier_str_mv | Karam, G. N. (1994). Elastic stability of cylindrical shells with soft elastic cores: biomimicking natural tubular structures (Doctoral dissertation, Massachusetts Institute of Technology) file:///C:/Users/rola.habre/Downloads/30692421-MIT%20(1).pdf |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/6689 |
| publishDate | 1994 |
| publisher.none.fl_str_mv | Massachusetts Institute of Technology |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Elastic stability of cylindrical shells with soft elastic coresbiomimicking natural tubular structuresKaram, Gebran NizarThin walled cylindrical shell structures are widespread in nature: examples include porcupine quills, hedgehog spines and plant stems. All have an outer shell of almost fully dense material supported by a low density, cellular core. In nature, all are loaded in some combination of axial compression and bending: failure is typically by buckling. Natural structures are often optimized. Here we have investigated and characterized the morphology of several natural tubular structures. Mechanical models recently developed to analyze the elastic buckling of a thin cylindrical shell supported by a soft elastic core (G.N. Karam and L.J. Gibson, Elastic buckling of cylindrical shells with elastic cores, I: Analysis, submitted to Int. J. Solids Structures, 1994, G.N. Karam and L.J. Gibson, Elastic buckling of cylindrical shells with elastic cores, II: Experiments, submitted to Int. J. Solids Structures, 1994) were used to study the mechanical efficiency of these natural structures. It was found that natural structures are often more mechanically efficient than equivalent weight hollow cylinders. Biomimicking of natural cylindrical shell structures may offer the potential to increase the mechanical efficiency of engineering structures.N/A225 p: illIncludes bibliographical referencesMassachusetts Institute of Technology2017-12-01T10:12:04Z2017-12-01T10:12:04Z19942017-12-01Thesisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/10725/6689Karam, G. N. (1994). Elastic stability of cylindrical shells with soft elastic cores: biomimicking natural tubular structures (Doctoral dissertation, Massachusetts Institute of Technology)http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.phpfile:///C:/Users/rola.habre/Downloads/30692421-MIT%20(1).pdfeninfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/66892021-03-19T10:03:29Z |
| spellingShingle | Elastic stability of cylindrical shells with soft elastic cores Karam, Gebran Nizar |
| status_str | publishedVersion |
| title | Elastic stability of cylindrical shells with soft elastic cores |
| title_full | Elastic stability of cylindrical shells with soft elastic cores |
| title_fullStr | Elastic stability of cylindrical shells with soft elastic cores |
| title_full_unstemmed | Elastic stability of cylindrical shells with soft elastic cores |
| title_short | Elastic stability of cylindrical shells with soft elastic cores |
| title_sort | Elastic stability of cylindrical shells with soft elastic cores |
| url | http://hdl.handle.net/10725/6689 http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php |