Rigids

Rigid elements are created in a space between two nodes of a model where a rigid connection is desired.

An option to calculate independent node is available.

Rigid elements are element config 5 and are displayed as a line between two nodes with the letter R written at the centroid of the element.



図 1. Single Node Rigidlink


図 2. Multiple Nodes Rigidlink

Rigid link elements are element config 55 and are displayed as lines between the independent node and the dependent node(s) with RL displayed at the independent node of the element.

Rigid link elements can be created with dependent nodes attached to an element as a SET, if allowed by the solver. If a rigid link with an automatically generated dependent node set is deleted, the associated node set is also deleted. If the automatically generated dependent node set is deleted, for example from browser or idle, the connected rigid link element is also deleted. Dependent node sets are automatically created when rigid link elements are created for solvers that require a set even though node selection was input by the user. A node set created independently can be selected as the dependent nodes and referenced by the rigid link element.
注: Two-node rigids with a dependent node set attached are always created as rigid link elements (config 55), not as rigid elements (config 5).

剛体要素の作成

Rigidsツールを使用して、剛体要素および剛体リンク要素を作成します。

  1. リボンからモデルRigidsツールを選択します。


    図 3.
  2. 要素を定義します。
    オプション 動作
    Type 剛体要素タイプを選択します。
    Linear 1D Elems AからElems Bへの投影に基づいて、１次元要素を作成します。
    Elems A 要素の開始位置となる要素を選択します。
    制約事項: Linear 1Dチェックボックスが選択されている場合にのみ有効です。
    Elems B 要素の終了位置となる要素を選択します。
    制約事項: Linear 1Dチェックボックスが選択されている場合にのみ有効です。
    Density A-B 選択された要素のそれぞれの間に作成したいプロット要素の数を指定します。
    制約事項: Linear 1Dチェックボックスが選択されている場合にのみ有効です。
    Calculate independent node 独立節点は、以前選択した従属節点の重心になるよう計算されます。したがって、独立節点の選択はできません。
    Independent node 剛体要素の独立節点を選択します。
    Dependent node(s) 1つ以上の従属節点を選択します。
    Dependent DOF 従属節点の自由度を選択します。
  3. Createをクリックします。

Update Rigid Elements

Use the エンティティエディター to update rigid elements.

This includes: modifying the independent and dependent node(s) selection, modifying the DOF, where applicable for the solver, and recalculating the independent node location.
注: To change the element type, see 要素タイプの変更.

Combine Rigid Elements

  1. From the モデル ribbon, click the arrow next to the Interactions tool group and select Combine Rigids.
  2. Define parameters.
    Option Action
    Elements Select the rigid elements that you wish to combine. The rigids and rigidlinks must have the same independent node and DOFs.

    If any combined rigid link elements have dependent nodes attached as a set, the resulting rigid link will also have dependent nodes attached as a set. This set is created for a result element. The nodes sets attached to combined elements are deleted after combining.
    Combine Rigid With: Choose between common independent node and any common node.
  3. Click Combine.