滑动轴承支承刚度

滑动轴承的力学模型如下图。沿各方向的刚度：

式中　　　　　　　　　W——轴颈上受的稳定静载荷，N；

c——轴承半径间隙，m；

——量纲一刚度系数，可根据轴瓦形式、S、L/D和δ值

由下表查得

滑动轴承力学模型

几种常用轴瓦的参数值

S

ε

ψ

双油槽圆形轴瓦L/D＝0.5

6.430

0.071

81.89

0.121

0.860

5.7

1.88

6.60

-14.41

1.55

13.31

-1.89

28.75

3.937

0.114

77.32

0.192

0.846

5.9

1.89

4.20

-9.27

1.57

8.58

-1.93

18.44

2.634

0.165

72.36

0.271

0.833

6.2

1.91

3.01

-6.74

1.61

6.28

-2.00

13.36

2.030

0.207

68.75

0.332

0.835

6.6

1.93

2.50

-5.67

1.65

5.33

-2.07

11.18

1.656

0.244

65.85

0.383

0.835

7.0

1.95

2.20

-5.06

1.69

4.80

-2.15

9.93

0.917

0.372

57.45

0.540

0.850

8.5

1.85

1.30

-4.01

2.12

3.23

-2.06

7.70

0.580

0.477

51.01

0.651

0.900

10.5

1.75

0.78

-3.70

2.67

2.40

-1.94

6.96

0.376

0.570

45.43

0.737

0.977

13.4

1.68

0.43

-3.64

3.33

1.89

-1.87

6.76

0.244

0.655

40.25

0.804

1.096

17.9

1.64

0.13

-3.74

4.21

1.54

-1.82

6.87

0.194

0.695

37.72

0.833

1.156

21.3

1.62

-0.01

-3.84

4.78

1.40

-1.80

7.03

0.151

0.734

35.20

0.858

1.240

25.8

1.61

-0.15

-3.98

5.48

1.27

-1.79

7.26

0.133

0.753

33.93

0.870

1.289

28.7

1.60

-0.22

-4.07

5.89

1.20

-1.79

7.41

0.126

0.761

33.42

0.875

1.310

30.0

1.60

-0.25

-4.11

6.07

1.18

-1.79

7.48

0.116

0.772

32.65

0.881

1.343

32.2

1.60

-0.30

-4.17

6.36

1.15

-1.79

7.59

0.086

0.809

30.04

0.902

1.473

41.4

1.59

-0.47

-4.42

7.51

1.03

-1.79

8.03

0.042

0.879

24.41

0.936

1.881

80.9

1.60

-0.92

-5.23

11.45

0.82

-1.80

9.48

双油槽圆形轴瓦L/D＝1

1.470

0.103

75.99

0.135

0.850

5.9

1.50

3.01

-10.14

1.53

6.15

-1.53

20.34

0.991

0.150

70.58

0.189

0.844

6.2

1.52

2.16

-7.29

1.56

4.49

-1.58

14.66

0.636

0.224

63.54

0.264

0.843

6.9

1.56

1.57

-5.33

1.62

3.41

-1.70

10.80

0.358

0.352

55.41

0.369

0.853

8.7

1.48

0.97

-3.94

1.95

2.37

-1.63

8.02

0.235

0.460

49.27

0.436

0.914

11.1

1.55

0.80

-3.57

2.19

2.19

-1.89

7.36

0.159

0.559

44.33

0.484

1.005

14.2

1.48

0.48

-3.36

2.73

1.74

-1.78

6.94

0.108

0.650

39.72

0.516

1.136

19.2

1.44

0.23

-3.34

3.45

1.43

-1.72

6.89

0.071

0.734

35.16

0.534

1.323

27.9

1.44

-0.03

-3.50

4.49

1.20

-1.70

7.15

0.056

0.773

32.82

0.540

1.449

34.9

1.45

-0.18

-3.65

5.23

1.10

-1.71

7.42

0.050

0.793

31.62

0.541

1.524

39.6

1.45

-0.26

-3.75

5.69

1.06

-1.71

7.60

0.044

0.811

30.39

0.543

1.608

45.3

1.46

-0.35

-3.88

6.22

1.01

-1.72

7.81

0.024

0.883

25.02

0.543

2.104

89.6

1.53

-0.83

-4.69

9.77

0.83

-1.78

9.17

椭圆轴瓦，预载δ＝0.5，L/D＝0.5

7.079

0.024

88.79

0.512

1.313

9.8

1.29

57.12

-40.32

91.58

45.50

63.29

159.20

2.723

0.061

88.58

0.518

1.315

10.0

0.74

22.03

-15.77

35.54

17.80

23.96

61.63

1.889

0.086

88.33

0.525

1.318

10.3

0.71

15.33

-11.18

24.93

12.59

16.31

43.14

1.229

0.127

87.75

0.541

1.325

10.8

0.78

10.03

-7.66

16.68

8.57

10.11

28.65

0.976

0.155

87.22

0.555

1.332

11.2

0.84

7.99

-6.39

13.59

7.08

7.66

23.20

0.832

0.176

86.75

0.567

1.338

11.6

0.90

6.82

-5.69

11.88

6.23

6.23

20.14

0.494

0.254

84.36

0.624

1.371

13.5

1.00

3.99

-4.28

8.11

4.27

2.76

13.26

0.318

0.323

81.08

0.684

1.421

16.4

1.23

2.34

-3.82

6.52

3.15

0.81

10.03

0.236

0.364

78.09

0.723

1.468

19.4

1.31

1.49

-3.76

6.07

2.54

-0.11

8.80

0.187

0.391

75.18

0.747

1.515

22.6

1.37

0.92

-3.82

6.03

2.13

-0.66

8.23

0.153

0.410

72.26

0.762

1.562

26.1

1.41

0.52

-3.92

6.21

1.82

-1.02

7.98

0.127

0.424

69.31

0.770

1.612

30.1

1.45

0.21

-4.04

6.53

1.58

-1.26

7.91

0.090

0.444

63.24

0.772

1.727

40.1

1.50

-0.23

-4.33

7.55

1.23

-1.54

8.11

椭圆轴瓦，预载δ＝0.5，L/D＝1

1.442

0.050

93.81

0.309

1.338

10.8

-1.29

22.14

-22.65

38.58

18.60

28.14

79.05

0.698

0.100

93.12

0.320

1.345

11.2

-0.24

10.79

-11.25

18.93

9.40

12.97

38.73

0.442

0.150

91.97

0.338

1.357

11.9

0.26

6.87

-7.45

12.28

6.36

7.50

25.00

0.308

0.200

90.37

0.361

1.376

12.8

0.58

4.79

-5.58

8.93

4.82

4.50

17.99

0.282

0.213

89.87

0.368

1.382

13.1

0.66

4.38

-5.24

8.30

4.53

3.91

16.66

0.271

0.220

89.61

0.372

1.385

13.2

0.69

4.20

-5.09

8.03

4.40

3.64

16.08

0.261

0.226

89.37

0.375

1.388

13.4

0.72

4.03

-4.96

7.79

4.28

3.41

15.57

0.240

0.239

88.80

0.383

1.396

13.7

0.77

3.70

-4.70

7.31

4.04

2.93

14.54

0.224

0.250

88.28

0.389

1.403

14.1

0.82

3.43

-4.51

6.95

3.86

2.55

13.74

0.211

0.260

87.79

0.395

1.409

14.4

0.86

3.21

-4.36

6.65

3.70

2.23

13.09

0.161

0.304

85.29

0.423

1.445

16.2

1.01

2.32

-3.84

5.63

3.07

1.02

10.75

0.120

0.350

81.80

0.452

1.500

19.1

1.14

1.52

-3.54

4.99

2.49

0.01

9.04

0.097

0.381

78.65

0.470

1.554

22.1

1.21

1.01

-3.46

4.82

2.10

-0.56

8.26

0.081

0.403

75.63

0.479

1.607

25.4

1.26

0.65

-3.47

4.87

1.82

-0.92

7.87

0.069

0.419

72.65

0.484

1.664

29.1

1.31

0.38

-3.52

5.06

1.60

-1.17

7.71

0.060

0.432

69.69

0.485

1.724

33.4

1.34

0.16

-3.60

5.36

1.42

-1.34

7.67

0.045

0.451

63.70

0.478

1.867

44.3

1.40

-0.19

-3.83

6.25

1.16

-1.56

7.88

三叶轴瓦，预载δ＝0.5，L/D＝0.5

6.574

0.018

55.45

0.250

1.420

8.2

31.32

46.78

-45.43

34.58

93.55

1.46

97.87

3.682

0.031

56.03

0.251

1.421

8.5

17.08

26.57

-25.35

20.35

51.73

1.35

56.10

2.523

0.045

56.57

0.252

1.423

8.9

11.48

18.48

-17.41

14.75

35.06

1.22

39.50

1.621

0.070

57.35

0.255

1.429

9.5

7.25

12.20

-11.38

10.53

22.25

1.01

26.81

1.169

0.094

57.95

0.259

1.437

10.2

5.26

9.06

-8.49

8.56

15.96

0.79

20.62

0.717

0.144

58.62

0.271

1.461

11.8

3.49

5.92

-5.85

6.85

9.93

0.37

14.74

0.491

0.192

58.63

0.285

1.497

13.8

2.77

4.34

-4.75

6.27

7.12

-0.02

12.07

0.356

0.237

58.14

0.300

1.543

16.2

2.41

3.35

-4.26

6.15

5.51

-0.36

10.67

0.267

0.278

57.30

0.315

1.599

19.1

2.19

2.63

-4.05

6.29

4.46

-0.66

9.87

0.203

0.314

56.18

0.331

1.665

22.8

2.04

2.05

-4.00

6.62

3.68

-0.91

9.43

0.156

0.347

54.85

0.345

1.742

27.6

1.90

1.55

-4.05

7.11

3.06

-1.12

9.23

0.141

0.360

54.26

0.352

1.776

29.8

1.85

1.36

-4.10

7.35

2.84

-1.20

9.20

0.121

0.377

53.31

0.361

1.830

33.6

1.78

1.09

-4.19

7.77

2.54

-1.30

9.20

0.093

0.402

51.55

0.379

1.931

41.6

1.67

0.67

-4.39

8.63

2.10

-1.44

9.30

0.055

0.441

47.10

0.419

2.182

66.1

1.49

-0.14

-4.94

11.07

1.29

-1.61

9.91

三叶轴瓦，预载δ＝0.5，L/D＝1

3.256

0.020

59.21

0.132

1.424

8.8

25.25

43.40

-43.30

28.31

88.33

1.11

94.58

1.818

0.035

59.68

0.133

1.426

9.2

13.70

24.34

-24.39

16.74

48.27

0.98

54.59

1.243

0.050

60.09

0.134

1.429

9.6

9.18

16.72

-16.93

12.21

32.37

0.84

38.75

0.796

0.076

60.62

0.136

1.436

10.4

5.80

10.82

-11.26

8.82

20.18

0.61

26.62

0.574

0.103

60.95

0.139

1.447

11.2

4.24

7.90

-8.55

7.24

14.27

0.37

20.73

0.353

0.155

61.00

0.147

1.478

13.0

2.89

5.02

-6.07

5.91

8.70

-0.06

15.15

0.245

0.203

60.44

0.156

1.521

15.2

2.36

3.60

-5.01

5.48

6.16

-0.43

12.59

0.181

0.246

59.46

0.165

1.574

17.8

2.09

2.74

-4.49

5.41

4.73

-0.73

11.20

0.138

0.285

58.22

0.173

1.637

21.0

1.92

2.12

-4.22

5.54

3.81

-0.98

10.39

0.108

0.320

56.80

0.181

1.710

24.9

1.80

1.65

-4.10

5.83

3.16

-1.18

9.91

0.085

0.351

55.23

0.189

1.794

29.9

1.71

1.26

-4.08

6.25

2.67

-1.35

9.64

0.068

0.379

53.54

0.197

1.891

36.2

1.62

0.92

-4.13

6.82

2.29

-1.48

9.54

0.062

0.389

52.82

0.201

1.934

39.2

1.59

0.79

-4.17

7.09

2.16

-1.52

9.54

0.054

0.403

51.68

0.208

2.014

44.4

1.54

0.57

-4.25

7.56

1.92

-1.57

9.57

0.034

0.441

47.19

0.232

2.290

69.8

1.42

-0.11

-4.65

9.70

1.23

-1.67

10.03

偏位圆柱轴瓦，预载δ＝0.5，L/D＝0.5

8.519

0.025

-4.87

1.664

0.971

7.7

64.74

-5.48

-82.04

47.06

59.71

-45.00

97.56

4.240

0.050

-4.82

1.664

0.972

8.0

32.32

-2.64

-41.06

23.60

29.94

-22.62

49.04

2.805

0.075

-4.72

1.664

0.975

8.4

21.49

-1.65

-27.42

15.81

20.06

-15.22

32.97

2.081

0.100

-4.59

1.664

0.978

8.8

16.05

-1.12

-20.61

11.93

15.15

-11.56

25.01

1.339

0.150

-4.14

1.660

0.988

9.7

10.56

-0.54

-13.79

8.08

10.25

-7.98

17.15

0.953

0.200

-3.47

1.649

1.002

10.8

7.78

-0.20

-10.39

6.18

7.83

-6.31

13.34

0.717

0.250

-2.76

1.641

1.023

12.1

6.15

0.05

-8.45

5.14

6.51

-5.43

11.29

0.555

0.300

-2.02

1.637

1.036

13.7

5.00

0.09

-7.20

4.63

5.38

-4.76

10.00

0.493

0.325

-1.78

1.637

1.052

14.2

4.53

-0.01

-6.72

4.56

4.74

-4.38

9.49

0.353

0.400

-1.70

1.645

1.108

16.5

3.53

-0.22

-5.78

4.63

3.40

-3.56

8.51

0.284

0.450

-2.00

1.656

1.154

18.4

3.08

-0.33

-5.40

4.85

2.79

-3.18

8.17

0.228

0.500

-2.51

1.671

1.210

21.0

2.74

-0.42

-5.15

5.18

2.34

-2.88

7.99

0.182

0.551

-3.19

1.690

1.276

24.4

2.48

-0.51

-5.01

5.65

1.98

-2.65

7.95

0.162

0.576

-3.58

1.700

1.314

26.5

2.37

-0.55

-4.97

5.93

1.82

-2.55

7.97

0.143

0.601

-4.02

1.711

1.357

28.9

2.27

-0.60

-4.95

6.26

1.69

-2.46

8.02

0.126

0.627

-4.49

1.723

1.404

31.9

2.19

-0.65

-4.95

6.64

1.56

-2.38

8.10

偏位圆柱轴瓦，预载δ＝0.5，L/D＝1

3.780

0.025

-8.21

1.271

1.030

7.7

56.69

-8.14

-83.73

52.13

47.10

-42.08

113.96

1.883

0.051

-8.16

1.271

1.031

8.0

28.31

-3.99

-41.89

26.11

23.61

-21.13

57.20

1.247

0.076

-8.08

1.271

1.034

8.3

18.83

-2.57

-27.95

17.45

15.81

-14.19

38.38

0.927

0.101

-7.96

1.271

1.037

8.7

14.08

-1.83

-20.99

13.13

11.93

-10.75

29.04

0.596

0.151

-7.46

1.266

1.047

9.5

9.22

-1.05

-13.89

8.74

8.00

-7.33

19.61

0.418

0.201

-6.58

1.244

1.061

10.6

6.68

-0.62

-10.17

6.44

5.96

-5.64

14.73

0.316

0.251

-5.85

1.224

1.081

11.8

5.26

-0.33

-8.13

5.22

4.90

-4.78

12.18

0.248

0.301

-5.10

1.206

1.105

13.3

4.35

-0.11

-6.87

4.49

4.28

-4.30

10.71

0.198

0.351

-4.29

1.191

1.133

15.3

3.70

0.04

-6.02

4.08

3.83

-3.99

9.80

0.160