force modify element_like bushing

2. A bushing has the same constitutive relation forms as a field. The primary difference between the two forces is that certain coefficients (Kij and Cij, where i is not equal to j) are zero for the bushing. You define only the diagonal coefficients (Kii and Cii) when you write the bushing. The following constitutive equations define how Adams uses the data you input for a bushing to apply a force and a torque to the I marker depending on the displacement and velocity of the I marker relative to the J marker. Adams applies a force of equal magnitude and opposite direction to the J marker.

3. . Tx, Ty, and Tz are the rotational force components parallel to the axes of the Cartesian coordinate system of the J marker. The terms a, b, and c are the rotational displacements of the I marker about the x-axis, the y-axis, and the zaxis, respectively, of the J marker. The terms Wx, Wy, and Wz are the time derivatives of a, b, and c, respectively, in the J marker reference frame. The termsT1, T2, and T3 are the measure numbers of any constant torque components acting parallel to the axes of the Cartesian coordinate system of the J marker.

4. You may use this name later to refer to this bushing. Adams View will not allow you to have two bushings with the same full name, so you must provide a unique name. Normally, entity names are composed of alphabetic, numeric, or '_' (underscore) characters, and start with an alphabetic or '_' character. They may be any length. For more information, see Using Extended Names. By enclosing the name in double quotes, you may use other printable characters, or start the name with a numeral. If a name contains characters, or starts with a numeral, you must always quote the name when entering it. Note that you can specify the parentage of an entity (e.g. what part "owns" a marker or a geometry element) when you CREATE it by changing the name. If you enter just the entity name, then the default parent will be assigned by Adams View. If you type in the full name, then you may over ride the default parent. In most cases, when creating an entity, Adams View will provide a default name. The default name that Adams View provides will specify the parentage that it has assumed. You may, or course, delete this name and use your own. The form of a full name is:

5. When you use the FILE Adams_DATA_SET WRITE command, Adams View writes an Adams data file for your model. Adams requires that each modeling element be identified by a unique integer identifier. If you use this parameter to specify a non-zero identifier, Adams View will use it in the corresponding statement in the Adams data file. You may also enter zero as an identifier, either explicitly or by default. The next time you write an Adams file, Adams View will replace the zero with a unique, internally generated identifier. Adams View will permanently store this identifier with the element just as if you had entered it yourself. Normally, you would let all identifiers default to zero, and Adams View would generate the identifiers for you. You are never required to enter a non-zero identifier. You only need to specify it if, for some reason, you wish to control the Adams file output.

6. When an Adams Solver data file (.adm) is read into Adams View, all comments associated with a statement (from the end of the previous statement through the end of the current statement) are stored with the object. Comments in the data file can be associated with model. These comments must follow the title statement and be followed by the comment 'END OF MODEL COMMENTS'. This string must be uppercase. When an Adams Solver data file is written, the comments for an object are written before the statement corresponding to the object.

7. The three stiffness coefficients multiply the three translational displacement components of the origin of the I marker along the x-axis, the y-axis, and the z-axis of the J marker. STIFFNESS must be in units of force per unit of displacement.

8. The three stiffness coefficients multiply the rotational velocity components of the body in which the I marker is fixed about the x-axis, the y-axis, and the z-axis of the J marker. The torque due to damping is zero when there is no relative rotational velocity between the two markers.