CN107766687A - Sealed muscle rebound curve analysis method - Google Patents
Sealed muscle rebound curve analysis method Download PDFInfo
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- CN107766687A CN107766687A CN201711279774.2A CN201711279774A CN107766687A CN 107766687 A CN107766687 A CN 107766687A CN 201711279774 A CN201711279774 A CN 201711279774A CN 107766687 A CN107766687 A CN 107766687A
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- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
The present invention relates to sealed muscle rebound curve analysis method, comprise the following steps that：The first step：The determination of sealed muscle structural parameters；Second step：Geometrical model is established according to driving parameter；3rd step：The initial topology of model；4th step：Driving parameter grid division；5th step：Constraint and loading environment；6th step：After completing FEM model foundation, FEM calculation is submitted；Read and preserve the active force of vertical direction displacement and the corresponding displacement of rigid plane pressure head；7th step：Sealed muscle rebound curve.The loading process and corresponding deformation of present invention simulation and record sealed muscle, obtain the rebound curve of sealed muscle, complete the prediction to sealed muscle rebound performance.Traditional method analyzed by plant equipment and experience the rebound performance of sealed muscle finished product is broken away from, realize " secondary design to " for sealed muscle, realize to carry out the performance and structure of sealed muscle in the design phase and purposefully optimize, design accuracy and operating efficiency are improved, reduces testing cost.
Description
Technical field
The present invention relates to a kind of method for analyzing performance of sealed muscle, and in particular to a kind of sealed muscle rebound curve analysis side
Method.
Background technology
The rebound characteristics of sealed muscle are a main special performance indications for characterizing dynamic sealing efficiency, have reacted rubber material
Elastic interior energy freely discharges shown deformation characteristic after material compression reaches entropy balance state.Elastomeric material has more typical
Viscoelastic property, the change of its parameter will undergo regular hour course, sealed muscle and sealing surface contact pressure it is too small or produce
Seal failure is easily caused during gap.At present, the state of the art both domestic and external is surveyed using compression test machine or rebound curve
Test-run a machine is tested, and obtains rebound curve.Prior art can not be predicted before product is made to sealed muscle, can only be passed through
Product is made largely to be tested afterwards, depends on experience, while high temperature test can not be carried out.Modern system can not be met
Make the requirement of design concept " secondary design to ".
The content of the invention
The present invention provides a kind of sealed muscle rebound curve analysis method, solve by plant equipment and experience to sealed muscle into
The rebound performance of product is analyzed, and can not carry out prediction and anticipation to its rebound performance in the design phase of sealed muscle
The problem of.
Sealed muscle rebound curve analysis method, is comprised the following steps that：
The first step：The determination of sealed muscle structural parameters：According to the structural parameters, geometric parameter and material of sealed muscle cross section structure
Expect characteristic, primarily determine that the modeling parameters of sealed muscle structure；
Second step：Geometrical model is established according to driving parameter：Root modeling parameters input as variable, establish geometrical model；
When any one parameter change in model, other modeling parameters produce corresponding change also referring to the geometrical model of foundation；
3rd step：The initial topology of model：The design feature of sealed muscle is analyzed, by the overall structure of sealed muscle point
Solve and form face for multiple geometries, then each geometry composition face is decomposed into multiple simple quadrangles and forms face；
4th step：Driving parameter grid division：Trellis-type is selected, and using user-defined sizing grid to all
Quadrangle forms the side grid division in face；
5th step：Constraint and loading environment：Assuming that sealed muscle contacts with rigid test cell；The rigid test cell
Composition includes rigid plane pressure head and rigid test bench；The upper surface of the rigid plane pressure head and sealed muscle, it is described firm
Property test bench contact with the lower surface of sealed muscle；The free degree of restraint rigidity test bench, rigid plane pressure head horizontal direction from
By degree and vertical direction rotary freedom, rigid plane pressure head vertical direction displacement is loaded；
6th step：After completing FEM model foundation, FEM calculation is submitted；Read and preserve hanging down for rigid plane pressure head
Active force of the Nogata to displacement and corresponding displacement；
7th step：Sealed muscle rebound curve：According to the vertical direction displacement of rigid plane pressure head and the effect of corresponding displacement
Power, the reaction force of sealed muscle is calculated, with reference to the lifting surface area of sealed muscle, calculate the resilience pressure data of sealed muscle, generate close
Seal rebound curve.
Further, the rigid plane pressure head vertical direction displacement is less than or equal to the maximum compressible amount of sealed muscle.
Further, the cross section structure of the sealed muscle includes：Full muscle structure, half muscle structure, " O " type be nonmetallic and T-shape
Nonmetallic sealed muscle.
Further, the cross sectional shape of the nonmetallic sealed muscle of described " O " type is circle；The nonmetallic sealed muscle of " O " type
Structural parameters include：Internal diameter R, path r, groove width Wo, the high H of grooveoAnd perimeter L；The internal diameter R is the nonmetallic sealed muscle of described " O " type
Cross circle centre position and the air line distance intersected with inwall；The path r is the diameter in section.
Further, the structural parameters of the nonmetallic sealed muscle of T-shape include：Height H, minimum widith Wmin, Breadth Maximum
Wmax, pattern draft α, fillet R1, groove width WtWith the high H of groovet。
Further, establishing geometrical model detailed process to the nonmetallic sealed muscle of " O " type in the second step is：First
The origin of coordinates (0,0,0) is established in the circle centre position of the nonmetallic sealed muscle of " O " type, in the kernel of section of the nonmetallic sealed muscle of " O " type
Coordinate is to make the circle that radius is path r/2 on ((R+r)/2,0,0) point；Meanwhile according to groove width Wo, the high H of grooveoEstablish rigidity test
The model of unit.
Further, the detailed process of the initial topology of model is in the 3rd step：With the nonmetallic sealed muscle of " O " type
Cross sectional coordinate for ((R+r)/2,0,0) point be square center, make the length of side for r/2 square；Pass through the pros again
The midpoint and center on each side of shape, generate two orthogonal " ten " font lines and with the intersection point of circular arc be designated as respectively A, B,
C and D；Finally, the minimum range point connection on four summits of square to circular arc is in line；The nonmetallic sealing of " O " type
The section of muscle is divided into 12 regular regions.
Further, the detailed process of driving parameter grid division is in the 4th step：It is big using user-defined grid
The small side to zonings all in the third step carries out grid arrangement, and the grid node number of each edge is the length of side divided by user
The numerical value round numbers that the sizing grid of definition obtains.
Further, the resilience pressure data detailed process of calculating sealed muscle is in the 7th step：Rigid plane pressure head
The active force divided by the contact area of rigid plane pressure head and sealed muscle of vertical direction；The rigid plane pressure head and " O "
The contact area of the nonmetallic sealed muscle of type is equal to the path r and girth of the nonmetallic sealed muscle of described " O " type product.
The present invention simulates and recorded the loading process of sealed muscle and corresponding deformation feelings by establishing model to sealed muscle
Condition, and then the rebound curve to sealed muscle is obtained, complete the prediction to sealed muscle rebound performance and estimate.Traditional dependence is broken away from
The method that plant equipment and experience are analyzed the rebound performance of sealed muscle finished product, " secondary design to " of sealed muscle is realized,
Realize to carry out the performance and structure of sealed muscle in the design phase and purposefully optimize, put forward design accuracy and operating efficiency
Height, reduce testing cost.
Brief description of the drawings
Fig. 1 is the logical schematic of the present invention；
Fig. 2 is full muscle structural representation；
Fig. 3 is half muscle structural representation；
Fig. 4 is " O " nonmetallic sealed muscle schematic diagram；
Fig. 5 is " T " nonmetallic sealing gasket schematic diagram；
Fig. 6 is the initial topology in the nonmetallic sealed muscle section of " O " type；
Fig. 7 is the grid division in the nonmetallic sealed muscle section of " O " type；
Fig. 8 is the finite element analysis of the nonmetallic sealed muscle of " O " type；
Fig. 9 is the nonmetallic sealed muscle rebound curve of " O " type.
Embodiment
The present invention is expanded on further with reference to accompanying drawing.
As shown in figure 1, sealed muscle rebound curve analysis method, is comprised the following steps that：
The first step：The determination of sealed muscle structural parameters：According to the structural parameters, geometric parameter and material of sealed muscle cross section structure
Expect characteristic, primarily determine that the modeling parameters of sealed muscle structure.As shown in Fig. 2,3,4 and 5, full muscle structure, half muscle knot are represented respectively
Structure, " O " type be nonmetallic and the cross section structure of the nonmetallic sealed muscle of T-shape.
Second step：Geometrical model is established according to driving parameter：Root modeling parameters input as variable, establish geometrical model；
When any one parameter change in model, other modeling parameters produce corresponding change also referring to the geometrical model of foundation.“O”
The cross sectional shape of the nonmetallic sealed muscle of type is circle, and the structural parameters of the nonmetallic sealed muscle of " O " type include：Internal diameter R, path r, groove
Wide Wo, the high H of grooveoAnd perimeter L.Internal diameter R is that the nonmetallic sealed muscle of " O " type crosses circle centre position and the air line distance intersected with inwall.Path
R is the diameter in section.The structural parameters of the nonmetallic sealed muscle of T-shape include：Height H, minimum widith Wmin, Breadth Maximum
Wmax, pattern draft α, fillet R1, groove width WtWith the high H of groovet。
3rd step：The initial topology of model：The design feature of sealed muscle is analyzed, by the overall structure of sealed muscle point
Solve and form face for multiple geometries, then each geometry composition face is decomposed into multiple simple quadrangles and forms face.
4th step：Driving parameter grid division：Trellis-type is selected, and using user-defined sizing grid to all
Quadrangle forms the side grid division in face.
5th step：Constraint and loading environment：Assuming that sealed muscle contacts with rigid test cell；The composition of rigid test cell
Including rigid plane pressure head and rigid test bench；The upper surface of rigid plane pressure head and sealed muscle, rigid test bench with it is close
Seal the contact of the lower surface of muscle；The free degree, the rigid plane pressure head horizontal direction free degree and the Vertical Square of restraint rigidity test bench
To rotary freedom, rigid plane pressure head vertical direction displacement is loaded；
6th step：After completing FEM model foundation, FEM calculation is submitted；Read and preserve hanging down for rigid plane pressure head
Active force of the Nogata to displacement and corresponding displacement.The maximum that the displacement of rigid plane pressure head vertical direction is less than or equal to sealed muscle can press
Contracting amount.
7th step：Sealed muscle rebound curve：According to the vertical direction displacement of rigid plane pressure head and the effect of corresponding displacement
Power, the reaction force of sealed muscle is calculated, with reference to the lifting surface area of sealed muscle, calculate the resilience pressure data of sealed muscle, generate close
Seal rebound curve.
The cross section structure of sealed muscle includes：Full muscle structure, half muscle structure, " O " type be nonmetallic and the nonmetallic sealing of T-shape
Muscle.
The nonmetallic sealed muscle rebound curve of " O " type is made a concrete analysis of below, the section of the nonmetallic sealed muscle of " O " type is circle
Shape：
The first step：The determination of sealed muscle structural parameters：According to the structural parameters, geometric parameter and material of sealed muscle cross section structure
Expect characteristic, primarily determine that the modeling parameters of sealed muscle structure.The structural parameters of the nonmetallic sealed muscle of " O " type include：It is internal diameter R, small
Footpath r, groove width, groove height and girth；Internal diameter R is that the nonmetallic sealed muscle of " O " type crosses circle centre position and the air line distance intersected with inwall；It is small
Footpath r is the diameter in section.
Second step：Geometrical model is established according to driving parameter：Root modeling parameters input as variable, establish geometrical model；
When any one parameter change in model, other modeling parameters produce corresponding change also referring to the geometrical model of foundation.
Establishing geometrical model detailed process to the nonmetallic sealed muscle of " O " type is：First in the circle of the nonmetallic sealed muscle of " O " type
The origin of coordinates (0,0,0) is established at the heart, is on ((R+r)/2,0,0) point in the kernel of section coordinate of the nonmetallic sealed muscle of " O " type
Make the circle that radius is path r/2；Meanwhile the model of rigid test cell is established according to groove width, groove height.
3rd step：The initial topology of model：The design feature of sealed muscle is analyzed, by the overall structure of sealed muscle point
Solve and form face for multiple geometries, then each geometry composition face is decomposed into multiple simple quadrangles and forms face.
As shown in fig. 6, the detailed process of the model initial topology to the nonmetallic sealed muscle of " O " type：The nonmetallic sealing of " O " type
The cross sectional coordinate of muscle is the center that ((R+r)/2,0,0) point is square, makees the square that the length of side is r/2；Pass through square again
Each side midpoint and center, generate and two orthogonal " ten " font lines and be designated as A, B, C respectively with the intersection point of circular arc
And D；Finally, the minimum range point connection on four summits of square to circular arc is in line；The nonmetallic sealed muscle of " O " type is cut
Face is divided into 12 regular regions.
4th step：To the detailed process of the nonmetallic sealed muscle driving parameter grid division of " O " type：As shown in fig. 7, using use
The sizing grid that family defines carries out grid arrangement, the grid node number of each edge to the side of zonings all in the third step
The numerical value round numbers obtained for the length of side divided by user-defined sizing grid.
5th step：Constraint and loading environment：Assuming that sealed muscle contacts with rigid test cell；The composition of rigid test cell
Including rigid plane pressure head and rigid test bench；The upper surface of rigid plane pressure head and sealed muscle, rigid test bench with it is close
Seal the contact of the lower surface of muscle；The free degree, the rigid plane pressure head horizontal direction free degree and the Vertical Square of restraint rigidity test bench
To rotary freedom, rigid plane pressure head vertical direction displacement is loaded.
1. the 6th step：After completing FEM model foundation, FEM calculation is submitted, reads and preserves rigid plane pressure head
Vertical direction displacement and the active force of corresponding displacement, as shown in Figure 8.For example, using non-thread line finite element software abaqus, rear
Platform calls abaqus solvers to submit and calculated.
7th step calculate the nonmetallic sealed muscle of " O " type resilience pressure data detailed process be：Rigid plane pressure head hangs down
Nogata to active force divided by the contact area of rigid plane pressure head and sealed muscle.Rigid plane pressure head and " O " type are nonmetallic close
The contact area for sealing muscle is equal to the path r of the nonmetallic sealed muscle of " O " type and the product of girth, as shown in Figure 9.
Claims (9)
1. sealed muscle rebound curve analysis method, it is characterised in that comprise the following steps that：
The first step：The determination of sealed muscle structural parameters：It is special according to the structural parameters, geometric parameter and material of sealed muscle cross section structure
Property, primarily determine that the modeling parameters of sealed muscle structure；
Second step：Geometrical model is established according to driving parameter：Inputted according to modeling parameters as variable, establish geometrical model；When
In model during any one parameter change, other modeling parameters produce corresponding change also referring to the geometrical model of foundation；
3rd step：The initial topology of model：The design feature of sealed muscle is analyzed, the overall structure of sealed muscle is decomposed into
Multiple geometries form face, then each geometry composition face is decomposed into multiple simple quadrangles and forms face；
4th step：Driving parameter grid division：Trellis-type is selected, and using user-defined sizing grid to four all sides
Shape forms the side grid division in face；
5th step：Constraint and loading environment：Assuming that sealed muscle contacts with rigid test cell；The composition of the rigid test cell
Including rigid plane pressure head and rigid test bench；The upper surface of the rigid plane pressure head and sealed muscle, the rigidity are surveyed
Try seat contact with the lower surface of sealed muscle；The free degree, the rigid plane pressure head horizontal direction free degree of restraint rigidity test bench
With vertical direction rotary freedom, rigid plane pressure head vertical direction displacement is loaded；
6th step：After completing FEM model foundation, FEM calculation is submitted；Read and preserve the Vertical Square of rigid plane pressure head
To the active force of displacement and corresponding displacement；
7th step：Sealed muscle rebound curve：According to the active force of the vertical direction displacement of rigid plane pressure head and corresponding displacement, meter
The reaction force of sealed muscle is calculated, with reference to the lifting surface area of sealed muscle, the resilience pressure data of sealed muscle is calculated, generates sealing resilience
Curve.
2. sealed muscle rebound curve analysis method according to claim 1, it is characterised in that：The rigid plane pressure head hangs down
Nogata is less than or equal to the maximum compressible amount of sealed muscle to displacement.
3. sealed muscle rebound curve analysis method according to claim 1 or 2, it is characterised in that the sealed muscle is cut
Face structure includes：Full muscle structure, half muscle structure, " O " type be nonmetallic and the nonmetallic sealed muscle of T-shape.
4. sealed muscle rebound curve analysis method according to claim 3, it is characterised in that " O " type is nonmetallic close
The cross sectional shape for sealing muscle is circle；The structural parameters of the nonmetallic sealed muscle of " O " type include：Internal diameter R, path r, groove width Wo、
The high H of grooveoAnd perimeter L；The internal diameter R is that the nonmetallic sealed muscle of " O " type crosses circle centre position and the air line distance intersected with inwall；
The path r is the diameter in the section of the nonmetallic sealed muscle of described " O " type.
5. sealed muscle rebound curve analysis method according to claim 3, it is characterised in that the nonmetallic sealed muscle of T-shape
Structural parameters include：Height H, minimum widith Wmin, Breadth Maximum Wmax, pattern draft α, fillet R1, groove width WtWith groove height
Ht。
6. sealed muscle rebound curve analysis method according to claim 4, it is characterised in that to described in the second step
The nonmetallic sealed muscle of " O " type establishes geometrical model detailed process and is：First seat is established in the circle centre position of the nonmetallic sealed muscle of " O " type
Mark origin (0,0,0), the nonmetallic sealed muscle of " O " type kernel of section coordinate be ((R+r)/2,0,0) point on make radius be it is small
Footpath r/2 circle；Meanwhile according to groove width Wo, the high H of grooveoEstablish the model of rigid test cell.
7. sealed muscle rebound curve analysis method according to claim 6, it is characterised in that model in the 3rd step
The detailed process of initial topology is：It is square by ((R+r)/2,0,0) point of the cross sectional coordinate of the nonmetallic sealed muscle of " O " type
The center of shape, make the square that the length of side is r/2；Again by the midpoint and center on square each side, two are generated mutually
Vertical " ten " font lines and A, B, C and D are designated as respectively with the intersection point of circular arc；Finally, by four summits of square to circle
The minimum range point connection of arc is in line；The section of the nonmetallic sealed muscle of " O " type is divided into 12 regular regions.
8. sealed muscle rebound curve analysis method according to claim 7, it is characterised in that parameter is driven in the 4th step
The detailed process of dynamic grid division is：The side of zonings all in the third step is entered using user-defined sizing grid
Row grid arrangement, the numerical value round numbers that the grid node number of each edge is the length of side divided by user-defined sizing grid obtains.
9. sealed muscle rebound curve analysis method according to claim 8, it is characterised in that calculated in the 7th step close
Envelope muscle resilience pressure data detailed process be：The active force divided by rigid plane pressure head of the vertical direction of rigid plane pressure head with
The contact area of sealed muscle；The contact area of the rigid plane pressure head and the nonmetallic sealed muscle of " O " type is equal to " O "
The path r of the nonmetallic sealed muscle of type and the product of girth.
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Cited By (4)
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| CN108563869A (en) * | 2018-04-13 | 2018-09-21 | 重庆长安汽车股份有限公司 | The design method of cylinder pad |
| CN112069570A (en) * | 2020-08-11 | 2020-12-11 | 中铁第四勘察设计院集团有限公司 | Design method, device and equipment for joint sealing gasket hole pattern and computer readable storage medium |
| CN113486471A (en) * | 2021-07-23 | 2021-10-08 | 中国核动力研究设计院 | Numerical simulation analysis method for sealing characteristic of spring metal C-shaped ring |
| CN116833264A (en) * | 2023-09-01 | 2023-10-03 | 太原科技大学 | Method for acquiring runner parameters of roll-punching composite forming process of metal bipolar plate of fuel cell |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108563869A (en) * | 2018-04-13 | 2018-09-21 | 重庆长安汽车股份有限公司 | The design method of cylinder pad |
| CN112069570A (en) * | 2020-08-11 | 2020-12-11 | 中铁第四勘察设计院集团有限公司 | Design method, device and equipment for joint sealing gasket hole pattern and computer readable storage medium |
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| CN113486471A (en) * | 2021-07-23 | 2021-10-08 | 中国核动力研究设计院 | Numerical simulation analysis method for sealing characteristic of spring metal C-shaped ring |
| CN113486471B (en) * | 2021-07-23 | 2023-06-20 | 中国核动力研究设计院 | Numerical simulation analysis method for sealing characteristic of spring metal C-shaped ring |
| CN116833264A (en) * | 2023-09-01 | 2023-10-03 | 太原科技大学 | Method for acquiring runner parameters of roll-punching composite forming process of metal bipolar plate of fuel cell |
| CN116833264B (en) * | 2023-09-01 | 2023-10-31 | 太原科技大学 | Method for acquiring runner parameters of roll-punching composite forming process of metal bipolar plate of fuel cell |
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