diff --git a/phases/linear-static-3d-euler-beam/index.json b/phases/linear-static-3d-euler-beam/index.json
index 0fa5868..9a70dd1 100644
--- a/phases/linear-static-3d-euler-beam/index.json
+++ b/phases/linear-static-3d-euler-beam/index.json
@@ -13,7 +13,10 @@
     {
       "step": 1,
       "name": "research-evidence",
-      "status": "pending"
+      "status": "completed",
+      "started_at": "2026-08-09T01:54:38+0900",
+      "summary": "FEM wiki 근거로 B31/B33, Hermite·Gauss, general beam section/output, analytical benchmark, SPD·assembly·reference 적용 한계를 정리한 research brief를 작성함",
+      "completed_at": "2026-08-09T02:12:54+0900"
     },
     {
       "step": 2,