2 "sweep": {
3 "id": "outline",
4 "title": "Sheet: outline at equal area (push and release)",
5 "text": "Four outlines cut from the same amount of steel (216 square inches, the area of the default 12 by 18 inch sheet): the rectangle, a square, the ellipse of the same 2:3 proportions, and a circle. Everything else is held at the defaults, including the 3 mm bow across the width. The push acts at a corner for the rectangle and the square and at the rim point opposite the hole for the ellipse and the circle, so part of the difference is the excitation itself: a rim point of an ellipse is stiffer than the corner of a rectangle, and the same 10 mm push deforms the whole sheet rather than bending a corner.",
6 "clips": [
7 {
8 "label": "rectangle 12 x 18 in",
9 "params": {}
10 },
11 {
12 "label": "square 14.7 x 14.7 in",
13 "params": {
14 "Lx": 0.37338,
15 "Ly": 0.37338
16 }
17 },
18 {
19 "label": "ellipse 13.5 x 20.3 in",
20 "params": {
21 "shape": "ellipse",
22 "Lx": 0.34392,
23 "Ly": 0.51587
24 }
25 },
26 {
27 "label": "circle 16.6 in",
28 "params": {
29 "shape": "ellipse",
30 "Lx": 0.42113,
31 "Ly": 0.42113
32 }
33 }
34 ]
35 },
36 "gainDb": 20,
37 "clips": [
38 {
39 "id": "outline-0",
40 "label": "rectangle 12 x 18 in",
41 "overrides": {},
42 "metrics": {
43 "peakPa": 0.04646482318639755,
44 "peakDbSpl": 67.32188586389826,
45 "rmsPa": 0.0033498771907116485,
46 "centroidHz": 195.7169225189091,
47 "t60": {
48 "20-100": 5.414347622298749,
49 "100-500": 4.0120593180726445,
50 "500-2k": 2.724403865668108,
51 "2k-8k": 7.678595678417119
52 },
53 "bandLevelsDb": {
54 "20-100": -1.153481711330091,
55 "100-500": 0,
56 "500-2k": -6.774905483785499,
57 "2k-8k": -41.19767338483816
58 }
59 },
60 "gainDb": 20,
61 "peakDbfs": -6.657514222822115,
62 "run": {
63 "steps": 3072000,
64 "seconds": 42.849673933,
65 "nx": 39,
66 "ny": 58,
67 "dt": 0.0000013020833333333333,
68 "maxContactForce": 0
69 }
70 },
71 {
72 "id": "outline-1",
73 "label": "square 14.7 x 14.7 in",
74 "overrides": {
75 "Lx": 0.37338,
76 "Ly": 0.37338
77 },
78 "metrics": {
79 "peakPa": 0.04231245815753937,
80 "peakDbSpl": 66.50876521790033,
81 "rmsPa": 0.0028998146339706604,
82 "centroidHz": 153.78177339593006,
83 "t60": {
84 "20-100": 5.176072339399107,
85 "100-500": 3.820017095709612,
86 "500-2k": 2.241561999735097,
87 "2k-8k": 9.780195948134796
88 },
89 "bandLevelsDb": {
90 "20-100": -1.3510534619823353,
91 "100-500": 0,
92 "500-2k": -14.446884787907162,
93 "2k-8k": -52.06856588691713
94 }
95 },
96 "gainDb": 20,
97 "peakDbfs": -7.470634868820039,
98 "run": {
99 "steps": 3072000,
100 "seconds": 42.348293672,
101 "nx": 48,
102 "ny": 48,
103 "dt": 0.0000013020833333333333,
104 "maxContactForce": 0
105 }
106 },
107 {
108 "id": "outline-2",
109 "label": "ellipse 13.5 x 20.3 in",
110 "overrides": {
111 "shape": "ellipse",
112 "Lx": 0.34392,
113 "Ly": 0.51587
114 },
115 "metrics": {
116 "peakPa": 0.14824815094470978,
117 "peakDbSpl": 77.39918579159244,
118 "rmsPa": 0.006297742425164596,
119 "centroidHz": 151.43483142404193,
120 "t60": {
121 "20-100": 5.541885223616255,
122 "100-500": 3.6135197136357577,
123 "500-2k": 2.517116322913482,
124 "2k-8k": 5.01921553930616
125 },
126 "bandLevelsDb": {
127 "20-100": -4.0901172080218515,
128 "100-500": 0,
129 "500-2k": -5.60376521355435,
130 "2k-8k": -31.47152866858852
131 }
132 },
133 "gainDb": 20,
134 "peakDbfs": 3.4197857048720732,
135 "run": {
136 "steps": 3072000,
137 "seconds": 44.373019035999995,
138 "nx": 44,
139 "ny": 65,
140 "dt": 0.0000013020833333333333,
141 "maxContactForce": 0
142 }
143 },
144 {
145 "id": "outline-3",
146 "label": "circle 16.6 in",
147 "overrides": {
148 "shape": "ellipse",
149 "Lx": 0.42113,
150 "Ly": 0.42113
151 },
152 "metrics": {
153 "peakPa": 0.15776817500591278,
154 "peakDbSpl": 77.93978812334517,
155 "rmsPa": 0.00580468937676945,
156 "centroidHz": 204.2454460973163,
157 "t60": {
158 "20-100": 5.958157976691518,
159 "100-500": 4.140714994700199,
160 "500-2k": 2.1795926718210104,
161 "2k-8k": 5.894120197652497
162 },
163 "bandLevelsDb": {
164 "20-100": -4.664294294628739,
165 "100-500": 0,
166 "500-2k": -14.347769638807126,
167 "2k-8k": -53.3015134659577
168 }
169 },
170 "gainDb": 20,
171 "peakDbfs": 3.9603880366247832,
172 "run": {
173 "steps": 3072000,
174 "seconds": 44.88345293100001,
175 "nx": 54,
176 "ny": 54,
177 "dt": 0.0000013020833333333333,
178 "maxContactForce": 0
179 }
180 }
181 ]
182}