RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT
For the impact of underground pressure,the roadway support equipment has poor anti-shock capability and is vulnerable to impact failure. A variable gradient thin-walled cylinder energy-absorbing and anti-shock component for anti-shock bracket is proposed. Design of different wall thickness differenc...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2021-01-01
|
| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.007 |
| _version_ | 1797767634637291520 |
|---|---|
| author | WANG ChunHua JIANG HongXing NIU HuiChao AN Da |
| author_facet | WANG ChunHua JIANG HongXing NIU HuiChao AN Da |
| author_sort | WANG ChunHua |
| collection | DOAJ |
| description | For the impact of underground pressure,the roadway support equipment has poor anti-shock capability and is vulnerable to impact failure. A variable gradient thin-walled cylinder energy-absorbing and anti-shock component for anti-shock bracket is proposed. Design of different wall thickness difference and number of segments of variable gradient thin-walled cylinder energy absorbing members,The impact-crushing experiment of each parameter variable-gradient thin-walled circular tube was carried out,and the relevant energy-absorbing and anti-shock performance parameters were analyzed. The results show that the increase of the number of segments and the difference in thickness of the thin-walled circular pipe members will reduce the initial wall thickness of the thin-walled pipe,and reduce the initial peak force. Under the same average wall thickness,the average supporting reaction force and total energy absorption of the variable gradient thin-walled tubes with different wall thickness differences and number of segments are higher than ordinary thin-walled tubes by 9. 3% ～ 178%. In the variable-thickness thinwalled circular tubes with different parameters,the initial peak force,the absorbed energy,the average supporting force and the supporting force fluctuation performance parameters of the variable-gradient thin-walled circular tube members with four sections and thickness difference of 0. 5 mm are superior,which is ZQ3300 anti-shock bracket ideal anti-shock energy absorbing member,The design of the variable-gradient thin-walled circular pipe member can change the position and quantity of the plastic hinge formed by the ordinary thin-walled circular pipe member,so that the deformation of the thin-walled member tends to be more stable in the diamond mode and the mixed mode,and the energy absorption and anti-shock ability is improved. |
| first_indexed | 2024-03-12T20:42:40Z |
| format | Article |
| id | doaj.art-ee2b47a8d1834ec6bb851d945a9d82a2 |
| institution | Directory Open Access Journal |
| issn | 1001-9669 |
| language | zho |
| last_indexed | 2024-03-12T20:42:40Z |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj.art-ee2b47a8d1834ec6bb851d945a9d82a22023-08-01T07:53:53ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692021-01-01431062106930611744RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORTWANG ChunHuaJIANG HongXingNIU HuiChaoAN DaFor the impact of underground pressure,the roadway support equipment has poor anti-shock capability and is vulnerable to impact failure. A variable gradient thin-walled cylinder energy-absorbing and anti-shock component for anti-shock bracket is proposed. Design of different wall thickness difference and number of segments of variable gradient thin-walled cylinder energy absorbing members,The impact-crushing experiment of each parameter variable-gradient thin-walled circular tube was carried out,and the relevant energy-absorbing and anti-shock performance parameters were analyzed. The results show that the increase of the number of segments and the difference in thickness of the thin-walled circular pipe members will reduce the initial wall thickness of the thin-walled pipe,and reduce the initial peak force. Under the same average wall thickness,the average supporting reaction force and total energy absorption of the variable gradient thin-walled tubes with different wall thickness differences and number of segments are higher than ordinary thin-walled tubes by 9. 3% ～ 178%. In the variable-thickness thinwalled circular tubes with different parameters,the initial peak force,the absorbed energy,the average supporting force and the supporting force fluctuation performance parameters of the variable-gradient thin-walled circular tube members with four sections and thickness difference of 0. 5 mm are superior,which is ZQ3300 anti-shock bracket ideal anti-shock energy absorbing member,The design of the variable-gradient thin-walled circular pipe member can change the position and quantity of the plastic hinge formed by the ordinary thin-walled circular pipe member,so that the deformation of the thin-walled member tends to be more stable in the diamond mode and the mixed mode,and the energy absorption and anti-shock ability is improved.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.007Rock burst;Anti-impact hydraulic support;Energy absorbing components;Energy absorbing and scouring performance |
| spellingShingle | WANG ChunHua JIANG HongXing NIU HuiChao AN Da RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT Jixie qiangdu Rock burst;Anti-impact hydraulic support;Energy absorbing components;Energy absorbing and scouring performance |
| title | RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT |
| title_full | RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT |
| title_fullStr | RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT |
| title_full_unstemmed | RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT |
| title_short | RESEARCH ON VARIABLE GRADIENT THIN-WALLED ENERGY ABSORBING COMPONENT OF SCOUR-PROOF HYDRAULIC SUPPORT |
| title_sort | research on variable gradient thin walled energy absorbing component of scour proof hydraulic support |
| topic | Rock burst;Anti-impact hydraulic support;Energy absorbing components;Energy absorbing and scouring performance |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2021.05.007 |
| work_keys_str_mv | AT wangchunhua researchonvariablegradientthinwalledenergyabsorbingcomponentofscourproofhydraulicsupport AT jianghongxing researchonvariablegradientthinwalledenergyabsorbingcomponentofscourproofhydraulicsupport AT niuhuichao researchonvariablegradientthinwalledenergyabsorbingcomponentofscourproofhydraulicsupport AT anda researchonvariablegradientthinwalledenergyabsorbingcomponentofscourproofhydraulicsupport |