Learning Forum

[Fritz Herschteinmueller]

Hello everyone,

I would like to know, if there is any list with a detailed information about supported materials (MAT_) in LS Dyna when using the smoothed particle Galerkin (SPG) method. I am especially interested in anisotropic materials that can simulate carbon fiber reinforced polymers (CFRP).

Thanks a lot in advance for your answer!

Best Regards,

Fritz. 

[Reno Genest]

Hello Fritz,

I found the following from our knowledge database:

"In general, SPG is compatible with all solid material models that use Cauchy strain for stress calculation. Ortho-/aniso-tropic material laws (including those using deformation gradient for stress calculation) need special treatment, so they are generally not supported."

Which anisotropic material model are you thinking of using?

Note that we are planning to add the list of material models supported by SPG in the LS-DYNA user Manual Vol II at some point in the future. I will contact the developer to get you a list now.

 

Reno.

 

[Reno Genest]

 

Hello Fritz,

*MAT_002 is suported and validated for SPG and *MAT_022 is supported but not validated as of now. I think those are the only orthotropic material models supported for now. *MAT_054/55 and *MAT_058 are not supported.

Here is the list of supported and validated material models for SPG as of November 28, 2023:

MatID	Supported	Validated
1	Yes	Yes
2	Yes	yes
3	Yes	Yes
4	Yes	No
5	Yes	No
6	Yes	No
7	No
8	Yes	No
9	Yes	No
10	Yes	No
11	Yes	No
12	Yes	No
13	Yes	No
14	Yes	No
15	Yes	Yes
16	Yes	Yes
17	No
18	Yes	No
19	Yes	No
20	No
21	No
22	Yes	No
23	No
24	Yes	Yes
25	Yes	No
26	No
27	Yes	No
28	No
29	No
30	Yes	No
31	No
32	No
33	No
34	No
35	Yes	No
36	Yes	No
37	No
38	No
39	No
40	No
41	Yes	No
42	Yes	No
43	Yes	No
44	Yes	No
45	Yes	No
46	Yes	No
MatID	Supported	Validated
47	Yes	No
48	Yes	No
49	Yes	No
50	Yes	No
51	Yes	No
52	Yes	No
53	No
54	No
55	No
56	No
57	Yes	No
58	No
59	Yes	No
60	Yes	No
61	Yes	No
62	No
63	Yes	No
64	Yes	No
65	Yes	No
66	No
67	No
68	No
69	No
70	No
71	No
72	Yes	Yes
73	No
74	No
75	Yes	No
76	Yes	No
77	Yes	No
78	Yes	No
79	Yes	No
80	No
81	Yes	No
82	Yes	No
83	Yes	Yes
84	No
85	No
86	No
87	Yes	No
88	Yes	No
89	No
90	No
91	No
92	No
MatID	Supported	Validated
93	No
94	No
95	No
96	No
97	No
98	No
99	No
100	No
101	No
102	No
103	Yes	No
104	Yes	No
105	No
106	Yes	No
107	Yes	No
108	No
109	No
110	Yes	No
111	Yes	Yes
112	Yes	No
113	No
114	No
115	Yes	No
116	No
117	No
118	No
119	No
120	No
121	No
122	Yes	No
123	Yes	No
124	Yes	Yes
125	No
126	Yes	Yes
127	Yes	No
128	No
129	No
130	No
131	No
132	No
133	No
134	No
135	No
136	No
137	No
138	No
MatID	Supported	Validated
139	No
140	No
141	No
142	No
143	Yes	Yes
144	No
145	Yes	No
146	No
147	Yes	No
148	No
149	No
150	No
151	No
152	No
153	No
154	No
155	Yes	No
156	No
157	Yes	No
158	No
159	Yes	Yes
160	No
161	Yes	No
162	Yes	No
163	No
164	No
165	No
166	No
167	No
168	No
169	No
170	No
171	No
172	No
173	Yes	No
174	No
175	No
176	Yes	No
177	No
178	No
179	No
180	No
181	Yes	No
182	No
183	No
184	No
MatID	Supported	Validated
185	No
186	No
187	No
188	No
189	No
190	No
191	No
192	No
193	Yes	yes
194	No
195	No
196	No
197	No
198	No
199	Yes	Yes
200	No
201	No
202	No
203	No
204	No
205	No
206	No
207	No
208	No
209	No
210	Yes	No
211	No
212	No
213	No
214	No
215	No
216	No
217	No
218	No
219	No
220	No
221	Yes	No
222	No
223	No
224	Yes	Yes
225	No
226	No
227	No
228	Yes	No
229	No
230	No
MatID	Supported	Validated
231	No
232	No
233	Yes	No
234	No
235	No
236	No
237	No
238	No
239	No
240	No
241	Yes	No
242	No
243	No
244	No
245	No
246	No
247	No
248	No
249	No
250	No
251	No
252	No
253	No
254	No
255	Yes	No
256	No
257	No
258	No
259	No
260	Yes	Yes
261	No
262	No
263	Yes	No
264	Yes	No
265	No
266	No
267	No
268	No
269	Yes	Yes
270	No
271	No
272	Yes	Yes
273	Yes	Yes
274	No
275	No
276	No
MatID	Supported	Validated
277	No
278	No
279	No
280	No
281	No
282	No
283	No
284	No
285	No
286	No
287	No
288	No
289	No
290	No
291	No
292	No
293	No
294	No
295	No
296	No
297	No
298	No
299	No
300	No

 

Reno.

 

[Fritz Herschteinmueller]

Hi Reno,

thank you very much for your detailed response. The orthropic models could be good candidates for the CFRP modelling. Sadly, MAT_54/55 and MAT_58 are not supported yet.

Could you please explain the meaning of the validated MAT models? If the models were not validated, could they possibly be unstable?

Best regards.

[Reno Genest]

Hello Fritz,

Unvalidated material models have not gone through extensive QA testing and there might be problems that we are not aware of.

I will let the developer know that you are interested in *MAT_054/55 and *MAT_058 with SPG.

 

Reno.

[Fritz Herschteinmueller]

Hi Reno,

I believe MAT_059 would be even more suitable for CFRP. If possible, could you please inform the developer? 

Do you also have an idea of how long the validation will take?

Thanks a lot once again!

Best Regards,

Fritz.