CAJ | 학술논문

为克服离散化模型弊端，使线缆能适应航天器内复杂空间约束工况，基于弹性细杆思想，提出含空间约束的航天器线缆力学建模方法建立线缆连续型力学模型。通过线缆惯性坐标系与局部坐标系描述线缆空间位置与形态，推导考虑线缆自重与空间约束作用的静力平衡方程，分析布线过程中典型空间约束工况，并构建无约束、端点约束、接触面约束及卡箍约束下线缆力学模型。用数值方法对典型约束工况下线缆力学模型进行计算与分析，获得线缆在无约束、接触面约束及卡箍约束下的受力规律。结果表明，布线过程中合理组合卡箍约束与接触面约束可有效提高线缆的力学性能，从而验证所建模型的普适性与可行性。
위극복리산화모형폐단，사선람능괄응항천기내복잡공간약속공황，기우탄성세간사상，제출함공간약속적항천기선람역학건모방법건립선람련속형역학모형。통과선람관성좌표계여국부좌표계묘술선람공간위치여형태，추도고필선람자중여공간약속작용적정력평형방정，분석포선과정중전형공간약속공황，병구건무약속、단점약속、접촉면약속급잡고약속하선람역학모형。용수치방법대전형약속공황하선람역학모형진행계산여분석，획득선람재무약속、접촉면약속급잡고약속하적수력규률。결과표명，포선과정중합리조합잡고약속여접촉면약속가유효제고선람적역학성능，종이험증소건모형적보괄성여가행성。
In order to overcome the drawbacks of discrete model and adapt to the complex spatial constraints in spacecraft,a mechanics modeling method of spacecraft cable considering spatial constraints was proposed based on the assumption of continuous thin elastic rod.A continuous mechanics model of the cable was established.The spatial position and attitude of the cable were described by inertial coordinate system and local coordinate system.And then,a static equilibrium equation of the cable considering deadweight and spatial constraints was deduced.Typical conditions of space constraints in the routing process were analyzed.Furthermore,mechanics models of the cable with none constraint, endpoint constraint,contact surface constraint and clamp constraint were established,and they were solved and analyzed using numerical method.The regularities of forces of the cable with none constraint,contact surface constraint and clamp constraint were obtained.The results show that mechanical properties of the cable can be improved effectively by combining the clamp constraint and contact surface constraint reasonably in the routing process.The universality and feasibility of the model were verified.The conclusions have important academic value and engineering significance to the mechanics modeling of the flexible cable and routing process.