Table 4 Fragmentation screening and fractal calculation.

From: Dynamic response characteristics and damage rule of graphite ore rock under different strain rates

P/MPa

Sample number

\(\dot{\varepsilon }\)

Cumulative mass percentage of each particle size on the screen/%

ds/mm

Da

40–50 mm

31.5–40 mm

20–31.5 mm

16–20 mm

10–16 mm

5–10 mm

2.5–5 mm

 < 2.5 mm

0.2

5-10-3

103.007

28.239

36.052

13.453

12.919

2.134

3.659

1.791

1.753

31.655

1.654

5-10-4

95.129

37.486

26.328

16.699

4.624

7.260

5.120

1.146

1.337

32.478

1.559

5-10-5

110.328

28.360

19.514

15.604

9.301

17.008

5.125

2.733

2.354

27.894

1.728

0.3

5-10-7

167.851

13.946

21.465

18.192

10.908

14.842

10.947

4.168

5.532

23.276

2.003

5-10-8

161.163

16.699

17.897

6.610

13.491

22.922

12.022

4.909

5.450

21.993

2.045

5-10-9

161.609

12.880

17.147

11.842

8.035

25.029

14.033

5.344

5.690

20.782

2.017

0.4

5-10-11

185.612

0

27.903

5.519

13.760

24.492

14.258

6.478

7.589

18.214

2.056

5-10-12

192.457

0

31.891

17.236

11.086

17.806

10.744

5.163

6.074

20.856

1.992

5-10-15

186.921

0

19.299

18.451

2.735

27.157

17.951

6.125

8.282

17.070

2.072

0.5

5-10-18

205.963

0

6.303

11.524

12.606

30.046

21.462

8.082

9.977

13.300

2.134

5-10-19

209.697

0

7.628

15.751

11.251

31.083

20.099

7.246

6.941

14.539

1.983

5-10-22

203.149

0

6.238

12.437

17.745

27.431

17.474

8.834

9.841

13.818

2.156

0.6

5-10-24

239.397

0

0

13.010

12.525

26.505

26.424

10.263

11.273

11.460

2.083

5-10-25

233.485

0

0

14.191

9.643

25.755

25.598

10.898

13.916

11.134

2.175

5-10-29

228.339

0

0

7.772

12.197

33.359

25.394

10.081

11.197

10.898

2.063

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