xref: /libCEED/examples/solids/qfunctions/constant-force.h (revision c0b5abf0f23b15c4f0ada76f8abe9f8d2b6fa247)
1 // Copyright (c) 2017-2024, Lawrence Livermore National Security, LLC and other CEED contributors.
2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
3 //
4 // SPDX-License-Identifier: BSD-2-Clause
5 //
6 // This file is part of CEED:  http://github.com/ceed
7 
8 /// @file
9 /// Constant forcing term for solid mechanics example using PETSc
10 
11 #include <ceed/types.h>
12 #ifndef CEED_RUNNING_JIT_PASS
13 #include <math.h>
14 #endif
15 
16 #ifndef PHYSICS_STRUCT
17 #define PHYSICS_STRUCT
18 typedef struct Physics_private *Physics;
19 struct Physics_private {
20   CeedScalar nu;  // Poisson's ratio
21   CeedScalar E;   // Young's Modulus
22 };
23 #endif
24 
25 // -----------------------------------------------------------------------------
26 // Constant forcing term along specified vector
27 // -----------------------------------------------------------------------------
28 CEED_QFUNCTION(SetupConstantForce)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
29   // Inputs
30   const CeedScalar *q_data = in[1];
31 
32   // Outputs
33   CeedScalar *force = out[0];
34 
35   // Context
36   const CeedScalar *forcing_vector = (CeedScalar(*))ctx;
37 
38   // Quadrature Point Loop
39   CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
40     // Setup
41     CeedScalar wdetJ = q_data[i];
42 
43     // Forcing function
44     // -- Component 1
45     force[i + 0 * Q] = forcing_vector[0] * wdetJ;
46 
47     // -- Component 2
48     force[i + 1 * Q] = forcing_vector[1] * wdetJ;
49 
50     // -- Component 3
51     force[i + 2 * Q] = forcing_vector[2] * wdetJ;
52   }  // End of Quadrature Point Loop
53 
54   return 0;
55 }
56 // -----------------------------------------------------------------------------
57