【荷兰《核材料杂志》1980年8月报道】一种高温反应堆芯体是由六角形石墨块组成的。反应堆工作时石墨块产生应力,在停堆时应力达到最大。应力梯度也可能很大。在计算这种应力时,通常都忽视了应力对热导率,膨胀系数和杨氏模量等杨理性质的影 [Netherlands Nuclear Materials Magazine reported in August 1980] A high-temperature reactor core is composed of hexagonal graphite blocks. The graphite block generates stress when the reactor is in operation and reaches its maximum stress at shutdown. The stress gradient can also be large. In calculating this stress, the effects of stress on the thermal properties such as thermal conductivity, coefficient of expansion and Young’s modulus are often ignored