CN104699912A - Strength calculation method of hub and spindle connecting bolt of wind generator set - Google Patents
Strength calculation method of hub and spindle connecting bolt of wind generator set Download PDFInfo
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- CN104699912A CN104699912A CN201510132807.5A CN201510132807A CN104699912A CN 104699912 A CN104699912 A CN 104699912A CN 201510132807 A CN201510132807 A CN 201510132807A CN 104699912 A CN104699912 A CN 104699912A
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Abstract
Disclosed is a strength calculation method of a hub and spindle connecting bolt of a wind generator set. The strength calculation method includes modeling based on existing finite element software as platform, defining material attributes of various parts at last, and calculating to obtain a deformation and stress nephogram. The modeling process mainly includes modeling in the finite element software, simulating a hub and a spindle by a solid unit, and simulating a bolt by a beam unit; fully constraining the spindle. The strength calculation method has the advantages that strength performance of the hub and spindle connecting bolt can be beneficially and precisely calculated, various working conditions can be calculated, saving time and cost is facilitated and the strength calculation method can be applicable to wide-range popularization.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly relate to a kind of wind generator unit wheel hub and main shaft coupling bolt computing method.
Background technology
The connection of main shaft and wheel hub is realized by bolt, and bolt can not bear the effect of pretightning force, also will bear the load of oneself hub centre, and this proposes very high requirement to wheel hub and main shaft coupling bolt.In order to meet requirement of strength, being all generally carry out analytical calculation by the experimental formula that standard provides, and wherein having many simplified conditions to make computational accuracy very low.In order to ensure the safe and reliable operation of the coupling bolt of main shaft and wheel hub, often adopt the method strengthening safety coefficient.Because carry out accurate optimal design to the coupling bolt of main shaft and wheel hub and accurate intensive analysis is particularly important.Adopt the method for Conjoint Analysis, utilize UG software and the coupling bolt of ANSYS finite element analysis software to wind driven generator principal shaft and wheel hub to carry out Strength co-mputation and force analysis.Made the illustraton of model of the coupling bolt of main shaft and wheel hub by UG software, according to the method for mapping and step, Parametric designing has been carried out to illustraton of model.And UG illustraton of model is changed into form and import again in ANSYS analysis software and carry out finite element analysis.Analysis result shows: the method can reflect wheel hub force and deformation situation more exactly, has advantages such as calculating accurately, wheel hub structure is rationally distributed, lightweight, amendment is convenient compared with theoretical calculation.
Summary of the invention
For above defect, the object of this invention is to provide a kind of wind generator unit wheel hub and main shaft coupling bolt computing method, thus be conducive to can the strength character of the coupling bolt of accurate calculation main shaft and wheel hub more, and multiple operating mode can be calculated simultaneously, expand the scope of application.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of wind generator unit wheel hub and main shaft coupling bolt computing method, by existing finite element software be platform implement modeling, finally define all parts material properties, calculate, draw the curve relation figure of load and bolt stress, and then joint bolt standard calculates stress and fatigue lifetime, mainly comprises the following steps in modeling process:
(1) first, main shaft, wheel hub and bolt are taken into account, sets up finite element model
(2) secondly, wheel hub and main shaft, bolt and main shaft set up face and face contact relation, realize power transmission.
(4) wheel hub adopts solid element SOLID187; Main shaft adopts the solid element SOLID185 without intermediate node, and body of bolt adopts beam element simulation, and bolt head adopts SHELL unit simulation.Bolt and wheel hub adopt conode to realize and are threaded.
(5) hub centre sets up node, and node is set up rigidity by MPC unit and wheel hub and is connected.
The beneficial effect of wind generator unit wheel hub of the present invention and main shaft coupling bolt computing method is: wheel hub, main shaft, first by carrying out modeling in finite element software, are adopted solid element simulation by performed step; In addition, be also included in hub centre node imposed load, all constraints are applied to main shaft; Finally define all parts material properties, calculate distortion and Stress Map; Thus be conducive to the strength character calculating wheel hub and main shaft coupling bolt accurately, and multiple operating mode can be calculated simultaneously, be conducive to saving time, cost-saving, be very suitable for promoting on a large scale.
Accompanying drawing explanation
According to embodiment and accompanying drawing, the present invention is described in further detail below.
Fig. 1 is the computation model of wind generator unit wheel hub described in the embodiment of the present invention and main shaft coupling bolt computing method;
Fig. 2 is the detail model of wind generator unit wheel hub described in the embodiment of the present invention and main shaft coupling bolt computing method.
In figure:
1, wheel hub; 2, main shaft; 3, bolt;
Embodiment
As shown in Figure 1, wind generator unit wheel hub of the present invention and main shaft coupling bolt computing method, its step mainly comprises:
(1) with existing finite element software for platform, implement modeling, first main shaft 2, wheel hub 1 and bolt 3 are taken into account, set up finite element model;
(2) secondly, wheel hub 1 sets up face and face contact relation with main shaft 2, bolt 3 with main shaft 2, realizes power transmission.
(3) wheel hub 1 adopts solid element SOLID187; Main shaft 2 adopts the solid element SOLID185 without intermediate node, and bolt 3 bar adopts beam element simulation, and bolt head adopts SHELL unit simulation.Bolt 3 and wheel hub 1 adopt conode to realize and are threaded.Hub centre sets up node, and node is set up rigidity by MPC unit and wheel hub and is connected.
Moment of flexure is applied to finite element model, obtains a graph of a relation of external force and bolt stress, in conjunction with markov matrix, calculate the fatigue lifetime of bolt.
In addition, the concrete mode applying position constraint is: main shaft applies all constraints.
Claims (5)
1. wind generator unit wheel hub and main shaft coupling bolt computing method, is characterized in that: calculate internal relation that is bolt strained and external force accurately, are conducive to life-span and the intensity of assessing bolt.
2., according to claim 1, main shaft, wheel hub and bolt are taken into account, sets up finite element model.
3., according to claim 1, wheel hub and main shaft, bolt and main shaft set up face and face contact relation, realize power transmission.
4., according to claim 1, wheel hub adopts solid element SOLID187; Main shaft adopts the solid element SOLID185 without intermediate node, and body of bolt adopts beam element simulation, and bolt head adopts SHELL unit simulation.Bolt and wheel hub adopt conode to realize and are threaded.
5. according to claim 1, described wind generator unit wheel hub and main shaft coupling bolt computing method, is characterized in that: adopt the better bolt strained situation of simulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132807.5A CN104699912A (en) | 2015-03-25 | 2015-03-25 | Strength calculation method of hub and spindle connecting bolt of wind generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132807.5A CN104699912A (en) | 2015-03-25 | 2015-03-25 | Strength calculation method of hub and spindle connecting bolt of wind generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104699912A true CN104699912A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132807.5A Pending CN104699912A (en) | 2015-03-25 | 2015-03-25 | Strength calculation method of hub and spindle connecting bolt of wind generator set |
Country Status (1)
| Country | Link |
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| CN (1) | CN104699912A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506563A (en) * | 2017-09-29 | 2017-12-22 | 江苏银基烯碳能源科技有限公司 | The evaluation method and system of a kind of bolt strength |
| CN107782489A (en) * | 2017-10-16 | 2018-03-09 | 郑州拽亘电子科技有限公司 | Bolt simulator and the moment of torsion plank calibrating installation using the simulator |
| CN114659779A (en) * | 2022-05-25 | 2022-06-24 | 中国飞机强度研究所 | Thermal stress equivalent applying device for mechanical connecting structure of airplane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7988239B1 (en) * | 2004-09-13 | 2011-08-02 | Scott Baker | Bearing mount for wheel mounted decorative member |
| CN102831260A (en) * | 2012-07-27 | 2012-12-19 | 南车株洲电力机车研究所有限公司 | Hub strength calculation method of wind power generating unit |
-
2015
- 2015-03-25 CN CN201510132807.5A patent/CN104699912A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7988239B1 (en) * | 2004-09-13 | 2011-08-02 | Scott Baker | Bearing mount for wheel mounted decorative member |
| CN102831260A (en) * | 2012-07-27 | 2012-12-19 | 南车株洲电力机车研究所有限公司 | Hub strength calculation method of wind power generating unit |
Non-Patent Citations (3)
| Title |
|---|
| 何玉林等: "MW级风力发电机组轮毂连接螺栓接触强度分析", 《现代制造工程》 * |
| 沃晓临: "兆瓦级风力发电机主要承载螺栓强度的有限元计算", 《电力与能源》 * |
| 齐涛等: "MW级风机变桨轴承与轮毂连接螺栓的强度分析", 《机电工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506563A (en) * | 2017-09-29 | 2017-12-22 | 江苏银基烯碳能源科技有限公司 | The evaluation method and system of a kind of bolt strength |
| CN107782489A (en) * | 2017-10-16 | 2018-03-09 | 郑州拽亘电子科技有限公司 | Bolt simulator and the moment of torsion plank calibrating installation using the simulator |
| CN114659779A (en) * | 2022-05-25 | 2022-06-24 | 中国飞机强度研究所 | Thermal stress equivalent applying device for mechanical connecting structure of airplane |
| CN114659779B (en) * | 2022-05-25 | 2022-08-16 | 中国飞机强度研究所 | Device is applyed to aircraft mechanical connection structure thermal stress equivalence |
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Application publication date: 20150610 |
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